Go through the Math in Focus Grade 3 Workbook Answer Key Chapter 7 Multiplication to finish your assignments.

## Math in Focus Grade 3 Chapter 7 Answer Key Multiplication

**Math Journal**

**Write the steps to your answer.**

Multiply 243 by 2.

Example

Step 1

Multiply 3 ones by 2.

2 × 3 ones = 6 ones

Step 2

Multiply 4 tens by 2.

2 × 4 tens = 8 tens

Step 3

Multiply 2 hundreds by 2.

2 × 2 hundreds = 4 hundreds

So, 2 × 243 = 486.

Multiply 323 by 3.

Step 1 _________________

_____________________

Step 2 _________________

_____________________

Step 3 _________________

_____________________

Answer:

323 × 3 = 969.

Explanation:

Step 1

Multiply 3 ones by 3.

3 × 3 ones = 9 ones

Step 2

Multiply 2 tens by 3.

2 × 3 tens = 6 tens

Step 3

Multiply 3 hundreds by 3.

3 × 3 hundreds = 9 hundreds

So 323 × 3 is 969.

**Put On Your Thinking cap!**

**Challenging Practice**

**Fill in the missing numbers.**

Question 1.

Answer:

The missing digit is 4.

Explanation:

As the product is 48 and the multiplier 2, to find the missing digit we will divide 48÷2 which is 24. So the missing digit is 4.

Question 2.

Answer:

The missing digit is 4.

Explanation:

As the product is 68 and the multiplicand is 17, to find the missing digit we will divide 68÷17 which is 4. So the missing digit is 4.

Question 3.

Answer:

The missing digit is 2.

Explanation:

As the product is 693 and the multiplier 3, to find the missing digit we will divide 693÷3 which is 231. So the missing digit is 2.

Question 4.

Answer:

The missing digit is 5.

Explanation:

As the product is 605 and the multiplicand is 121, to find the missing digit we will divide 605÷121 which is 5. So the missing digit is 5.

Question 5.

Answer:

The missing digit is 2.

Explanation:

As the product is 616 and the multiplicand is 308, to find the missing digit we will divide 616÷308 which is 2. So the missing digit is 2.

Question 6.

Answer:

The missing digit is 3.

Explanation:

As the product is 540 and the multiplier 4, to find the missing digit we will divide 540÷4 which is 135. So the missing digit is 3.

Question 7.

Answer:

The missing digit is 2.

Explanation:

As the product is 756 and the multiplier 3, to find the missing digit we will divide 756÷3 which is 252. So the missing digit is 2.

Question 8.

Answer:

The missing digit is 4.

Explanation:

As the product is 592 and the multiplier 4, to find the missing digit we will divide 592÷4 which is 148. So the missing digit is 4.

**Put on Your Thinking Cap!**

**Problem Solving**

Solve.

Frank has 100 geese and cows on his farm. The animals have a total of 340 legs. How many geese and cows does Frank have?

Frank has ___ geese and __ cows.

Answer:

Frank has 30 geese and 70 cows.

Explanation:

Given that Frank has 100 geese and cows on his farm and the animals have a total of 340 legs. So the number of geese and cows do Frank has is