Multiplication and Division

3rd Grade · Trimestre 1 · CCSS: 3.OA.A.1, 3.OA.A.2, 3.OA.A.3, 3.OA.A.4 · Dificuldade: fácil

Problema 1 de 5

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Problema 1

A classroom has 4 rows of desks with 6 desks in each row. Write a multiplication equation to find the total number of desks, then solve it.

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Problemas

1. A classroom has 4 rows of desks with 6 desks in each row. Write a multiplication equation to find the total number of desks, then solve it.

2. A coach has 18 soccer balls and wants to divide them equally among 3 teams. How many soccer balls does each team get? Write a division equation to show your answer.

3. Maria baked 7 trays of cookies. Each tray has 8 cookies. How many cookies did Maria bake in all?

4. There are 24 students in a class. The teacher wants to split them into equal groups of 4 for a science project. How many groups will there be?

5. James knows that $5 \times \text{?} = 35$ . What is the unknown factor? Explain how you can use division to find it.

Gabarito — Multiplication and Division

1. There are 4 rows with 6 desks in each row. This means 4 groups of 6:

$4 \times 6 = 24$

There are $24$ desks in the classroom.

2. We need to split 18 soccer balls into 3 equal groups:

$18 \div 3 = 6$

Each team gets $6$ soccer balls.

3. Maria has 7 trays with 8 cookies on each tray. We multiply:

$7 \times 8 = 56$

Maria baked $56$ cookies in all.

4. We divide the 24 students into groups of 4:

$24 \div 4 = 6$

There will be $6$ groups.

5. We need to find the number that, when multiplied by 5, gives 35.

We can use division to find the unknown factor:

$35 \div 5 = 7$

The unknown factor is $7$ , because $5 \times 7 = 35$ .

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