Montessori Stamp Game Command and Control Cards - 3rd Grade

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 Montessori Stamp Game Command and Control Cards - 3rd Grade

How to Use These Cards

Each card follows the Read-Build-Draw-Write problem-solving approach:

1. READ the problem carefully
2. BUILD the problem using the Montessori stamp game materials
3. DRAW a representation (bar model, tape diagram, or pictorial model)
4. WRITE the equations and solution

Hierarchy of Skills

Level 1: Foundational Operations (2nd Grade Review)

• Addition with 2-3 digit numbers (no regrouping)
• Subtraction with 2-3 digit numbers (no regrouping)
• Introduction to multiplication as repeated addition
• Basic place value (units, tens, hundreds)

Level 2: Core 3rd Grade Skills

• Addition with 3-4 digit numbers (with regrouping)
• Subtraction with 3-4 digit numbers (with regrouping)
• Multiplication with 1-digit multipliers
• Introduction to division with 1-digit divisors
• Place value to thousands

Level 3: Advanced 3rd Grade Skills

• Multi-step word problems
• Multiplication with 2-digit multipliers
• Division with remainders
• Introduction to decimals (tenths)

Level 4: Extensions (4th Grade Preparation)

• Complex multi-step problems
• Decimals (tenths and hundredths)
• Advanced multiplication and division scenarios
• Real-world applications

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Level 1: Foundational Operations (2nd Grade Review)

Addition Without Regrouping

Card 1

READ: Sarah collected 32 seashells on Monday and 45 seashells on Tuesday. How many seashells did she collect altogether?

BUILD: Use the stamp game to represent 32 and 45, then combine them.

DRAW: Draw a bar model showing 32 and 45 combined.

WRITE:

• Equation: 32 + 45 = ?
• Solution: 32 + 45 = 77 seashells

Card 2

READ: There are 61 red birds and 27 blue birds in the sanctuary. How many birds are there in total?

BUILD: Use the stamp game to represent 61 and 27, then combine them.

DRAW: Draw a tape diagram showing the two quantities.

WRITE:

• Equation: 61 + 27 = ?
• Solution: 61 + 27 = 88 birds

Subtraction Without Regrouping

Card 3

READ: Max had 87 marbles. He gave 25 marbles to his friend. How many marbles does Max have now?

BUILD: Represent 87 using the stamp game, then remove 25.

DRAW: Draw a bar model showing 87 and the part removed (25).

WRITE:

• Equation: 87 - 25 = ?
• Solution: 87 - 25 = 62 marbles

Card 4

READ: A bookshelf had 93 books. The librarian removed 52 books for repair. How many books remain on the shelf?

BUILD: Represent 93 using the stamp game, then remove 52.

DRAW: Draw a tape diagram showing the total and the part removed.

WRITE:

• Equation: 93 - 52 = ?
• Solution: 93 - 52 = 41 books

Introduction to Multiplication

Card 5

READ: Emma plants 4 rows of carrots with 12 seeds in each row. How many carrot seeds did she plant?

BUILD: Use the stamp game to represent 4 groups of 12.

DRAW: Draw 4 equal groups with 12 in each group.

WRITE:

• Repeated addition: 12 + 12 + 12 + 12 = ?
• Multiplication: 4 × 12 = ?
• Solution: 4 × 12 = 48 seeds

Card 6

READ: Each package contains 21 pencils. If the teacher buys 3 packages, how many pencils does she have?

BUILD: Use the stamp game to represent 3 groups of 21.

DRAW: Draw 3 equal groups with 21 in each.

WRITE:

• Repeated addition: 21 + 21 + 21 = ?
• Multiplication: 3 × 21 = ?
• Solution: 3 × 21 = 63 pencils

Level 2: Core 3rd Grade Skills

Addition With Regrouping

Card 7

READ: The school library received 248 new fiction books and 175 new non-fiction books. How many new books did the library receive in total?

BUILD: Use the stamp game to represent 248 and 175, then combine them, regrouping as needed.

DRAW: Draw a place value chart showing the addition and regrouping.

WRITE:

• Equation: 248 + 175 = ?
• Solution: 248 + 175 = 423 books

Card 8

READ: On a road trip, Javier's family drove 367 miles on the first day and 489 miles on the second day. How many miles did they drive in the two days?

BUILD: Set up 367 and 489 with the stamp game, then combine, regrouping as needed.

DRAW: Draw a bar model showing the two distances.

WRITE:

• Equation: 367 + 489 = ?
• Solution: 367 + 489 = 856 miles

Subtraction With Regrouping

Card 9

READ: A container has 543 beads. The art teacher used 278 beads for a project. How many beads are left in the container?

BUILD: Represent 543 using the stamp game, then remove 278, regrouping as needed.

DRAW: Draw a tape diagram to represent the problem.

WRITE:

• Equation: 543 - 278 = ?
• Solution: 543 - 278 = 265 beads

Card 10

READ: The aquarium tank holds 625 gallons of water. If 387 gallons have been filled, how many more gallons are needed to fill the tank?

BUILD: Represent 625 using the stamp game, then remove 387, regrouping as needed.

DRAW: Draw a bar model showing the total capacity and the amount filled.

WRITE:

• Equation: 625 - 387 = ?
• Solution: 625 - 387 = 238 gallons

Multiplication with 1-Digit Multipliers

Card 11

READ: Each classroom needs 124 tiles for an art project. If there are 6 classrooms, how many tiles are needed in total?

BUILD: Use the stamp game to show 6 groups of 124.

DRAW: Draw a representation showing the multiplication.

WRITE:

• Equation: 6 × 124 = ?
• Solution: 6 × 124 = 744 tiles

Card 12

READ: A delivery truck can carry 256 boxes at one time. How many boxes can the truck carry in 8 trips?

BUILD: Represent 8 groups of 256 using the stamp game.

DRAW: Draw a representation of 8 groups of 256.

WRITE:

• Equation: 8 × 256 = ?
• Solution: 8 × 256 = 2,048 boxes

Introduction to Division with 1-Digit Divisors

Card 13

READ: A school has 168 students that need to be divided equally into 4 teams. How many students will be on each team?

BUILD: Use the stamp game to represent 168, then divide it into 4 equal groups.

DRAW: Draw a tape diagram showing 168 divided into 4 equal parts.

WRITE:

• Equation: 168 ÷ 4 = ?
• Solution: 168 ÷ 4 = 42 students per team

Card 14

READ: Grandma has 369 cookies that she wants to package equally into 9 gift boxes. How many cookies will go in each box?

BUILD: Use the stamp game to represent 369, then divide into 9 equal groups.

DRAW: Draw a representation showing the division.

WRITE:

• Equation: 369 ÷ 9 = ?
• Solution: 369 ÷ 9 = 41 cookies per box

Place Value to Thousands

Card 15

READ: Write the number 3,572 in expanded form using the stamp game.

BUILD: Represent 3,572 using the stamp game materials.

DRAW: Draw a place value chart showing thousands, hundreds, tens, and ones.

WRITE:

• Expanded form: 3,000 + 500 + 70 + 2
• Word form: Three thousand, five hundred seventy-two

Card 16

READ: Tim wrote the number 4,805. Represent this number with the stamp game and identify the value of each digit.

BUILD: Use the stamp game to show 4,805.

DRAW: Draw a place value chart with the digits and their values.

WRITE:

• 4 in the thousands place = 4,000
• 8 in the hundreds place = 800
• 0 in the tens place = 0
• 5 in the ones place = 5

Level 3: Advanced 3rd Grade Skills

Multi-Step Word Problems

Card 17

READ: A store received 278 apples on Monday and 345 apples on Tuesday. They sold 429 apples by Wednesday evening. How many apples remain?

BUILD: First use the stamp game to add 278 and 345, then subtract 429 from the sum.

DRAW: Draw a bar model showing the two-step process.

WRITE:

• Step 1: 278 + 345 = 623 apples received
• Step 2: 623 - 429 = 194 apples remain

Card 18

READ: A school fundraiser collected $127 on Monday, $238 on Tuesday, and $195 on Wednesday. If they need $750 to meet their goal, how much more money do they need to raise?

BUILD: Add 127, 238, and 195 using the stamp game, then subtract from 750.

DRAW: Draw a tape diagram showing the amounts collected and the goal.

WRITE:

• Step 1: 127 + 238 + 195 = $560 collected
• Step 2: 750 - 560 = $190 still needed

Multiplication with 2-Digit Multipliers

Card 19

READ: Each bus can transport 32 students. How many students can 14 buses transport?

BUILD: Use the stamp game to multiply 32 by 14.

DRAW: Draw an area model showing 32 × 14.

WRITE:

• Partial products: (30 × 10) + (30 × 4) + (2 × 10) + (2 × 4)
• Calculation: 300 + 120 + 20 + 8 = 448
• Solution: 32 × 14 = 448 students

Card 20

READ: A theater has 23 rows with 45 seats in each row. How many seats are there in the theater?

BUILD: Use the stamp game to multiply 45 by 23.

DRAW: Draw an area model showing the multiplication.

WRITE:

• Partial products: (40 × 20) + (40 × 3) + (5 × 20) + (5 × 3)
• Calculation: 800 + 120 + 100 + 15 = 1,035
• Solution: 23 × 45 = 1,035 seats

Division with Remainders

Card 21

READ: 275 students need to be placed in groups of 6 for a field trip. How many complete groups can be formed, and how many students will be left over?

BUILD: Use the stamp game to represent 275, then divide into groups of 6.

DRAW: Draw a pictorial model showing groups of 6 with remainders.

WRITE:

• Equation: 275 ÷ 6 = ?
• Solution: 275 ÷ 6 = 45 remainder 5
• 45 complete groups with 5 students left over

Card 22

READ: A cafeteria has 583 pieces of fruit to be divided equally among 8 classes. How many pieces will each class receive, and how many pieces will be left over?

BUILD: Use the stamp game to represent 583, then divide into 8 equal groups.

DRAW: Draw a representation showing the division with remainder.

WRITE:

• Equation: 583 ÷ 8 = ?
• Solution: 583 ÷ 8 = 72 remainder 7
• Each class gets 72 pieces with 7 pieces left over

Introduction to Decimals (Tenths)

Card 23

READ: Maya has 2 whole pizzas and 7 tenths of another pizza. Represent this amount using the stamp game and decimal tiles.

BUILD: Use stamp game and decimal tiles to show 2.7.

DRAW: Draw a model showing 2 wholes and 7 tenths.

WRITE:

• Decimal: 2.7
• Word form: Two and seven tenths

Card 24

READ: Jordan ran 3.4 kilometers on Monday and 2.6 kilometers on Tuesday. How far did Jordan run in total?

BUILD: Use the stamp game with decimal tiles to represent 3.4 and 2.6, then combine.

DRAW: Draw a representation showing the addition of decimals.

WRITE:

• Equation: 3.4 + 2.6 = ?
• Solution: 3.4 + 2.6 = 6.0 kilometers

Level 4: Extensions (4th Grade Preparation)

Complex Multi-Step Problems

Card 25

READ: A store sells notebooks for $3 each and pens for $2 each. If Maria buys 4 notebooks and 7 pens, and pays with a $50 bill, how much change will she receive?

BUILD: Use the stamp game to calculate the cost of notebooks, the cost of pens, the total cost, and then the change.

DRAW: Draw a model showing each calculation step.

WRITE:

• Step 1: 4 × $3 = $12 for notebooks
• Step 2: 7 × $2 = $14 for pens
• Step 3: $12 + $14 = $26 total
• Step 4: $50 - $26 = $24 change

Card 26

READ: A school orders 15 boxes of pencils with 24 pencils in each box. If the pencils need to be distributed equally to 8 classrooms, how many pencils will each classroom receive?

BUILD: Use the stamp game to multiply 15 and 24, then divide the result by 8.

DRAW: Draw models for both the multiplication and division steps.

WRITE:

• Step 1: 15 × 24 = 360 pencils in total
• Step 2: 360 ÷ 8 = 45 pencils per classroom

Decimals (Tenths and Hundredths)

Card 27

READ: Sam has 5.75 meters of ribbon. He uses 2.38 meters for a project. How much ribbon does he have left?

BUILD: Use the stamp game with decimal tiles to represent 5.75, then remove 2.38.

DRAW: Draw a model showing the subtraction of decimals.

WRITE:

• Equation: 5.75 - 2.38 = ?
• Solution: 5.75 - 2.38 = 3.37 meters

Card 28

READ: A recipe calls for 1.25 cups of flour for one batch of cookies. How much flour is needed to make 4 batches?

BUILD: Use the stamp game with decimal tiles to multiply 1.25 by 4.

DRAW: Draw a representation showing 4 groups of 1.25.

WRITE:

• Equation: 4 × 1.25 = ?
• Solution: 4 × 1.25 = 5.00 cups

Advanced Multiplication and Division

Card 29

READ: A factory produces 135 toys per hour. How many toys can it produce in 24 hours?

BUILD: Use the stamp game to multiply 135 by 24.

DRAW: Draw an area model showing the multiplication.

WRITE:

• Equation: 135 × 24 = ?
• Solution: 135 × 24 = 3,240 toys

Card 30

READ: A truck is carrying 2,856 pounds of rice that needs to be packed into bags of 32 pounds each. How many complete bags can be filled?

BUILD: Use the stamp game to divide 2,856 by 32.

DRAW: Draw a model showing the division.

WRITE:

• Equation: 2,856 ÷ 32 = ?
• Solution: 2,856 ÷ 32 = 89 bags, with 8 pounds remaining

Real-World Applications

Card 31

READ: A family is planning a road trip. If their car travels an average of 25.5 miles per gallon of gas, and they have a 14-gallon tank, how far can they travel on a full tank?

BUILD: Use the stamp game with decimal tiles to multiply 25.5 by 14.

DRAW: Draw a representation showing the multiplication.

WRITE:

• Equation: 25.5 × 14 = ?
• Solution: 25.5 × 14 = 357 miles

Card 32

READ: The school garden is a rectangle measuring 12.5 meters by 8.75 meters. What is the perimeter of the garden?

BUILD: Use the stamp game with decimal tiles to calculate 2 × (12.5 + 8.75).

DRAW: Draw the rectangle and show the calculation of perimeter.

WRITE:

• Step 1: 12.5 + 8.75 = 21.25
• Step 2: 2 × 21.25 = 42.5
• Solution: The perimeter is 42.5 meters

Answer Cards

Level 1 Answers

1. 77 seashells
2. 88 birds
3. 62 marbles
4. 41 books
5. 48 seeds
6. 63 pencils

Level 2 Answers

7. 423 books
8. 856 miles
9. 265 beads
10. 238 gallons
11. 744 tiles
12. 2,048 boxes
13. 42 students per team
14. 41 cookies per box
15. 3,000 + 500 + 70 + 2
16. 4,000 + 800 + 0 + 5

Level 3 Answers

17. 194 apples
18. $190 still needed
19. 448 students
20. 1,035 seats
21. 45 groups with 5 students left over
22. 72 pieces per class with 7 pieces left over
23. 2.7
24. 6.0 kilometers

Level 4 Answers

25. $24 change
26. 45 pencils per classroom
27. 3.37 meters
28. 5.00 cups
29. 3,240 toys
30. 89 bags
31. 357 miles
32. 42.5 meters