All the solutions provided in **McGraw Hill Math Grade 5 Answer Key PDF Chapter 3 Lesson 4 Multiplying by 1 Digit Whole Numbers** are as per the latest syllabus guidelines.

## McGraw-Hill Math Grade 5 Answer Key Chapter 3 Lesson 4 Multiplying by 1 Digit Whole Numbers

**Multiply and then describe the strategy you used to find the answer.**

Question 1.

16 × 3 = ______

__I changed 3 to 6 and 16 to 8. Then I multiplied 6 × 8 = 48.__

Question 2.

21 × 5 = ___

Answer:

15 × 7 = 105.

Explanation:

Here, we have changed 5 to 15 and 21 to 7 and then multiplied 15 × 7 which is 105.

Question 3.

4 × 55 = ________

Answer:

20 × 11 = 220.

Explanation:

Here, we have changed 4 to 20 and 55 to 11 and then multiplied 20 × 11 which is 220.

Question 4.

225 × 3 ______

Answer:

225 × 3 = 675.

Explanation:

Here, we have changed 225 to 75 and 3 to 9 and then multiplied 75 × 9 which is 675.

Question 5.

Answer:

31 × 3 = 93.

Explanation:

Here, we have changed 31 to 93 and 3 to 1 and then multiplied 93 × 1 which is 93.

Question 6.

Answer:

42 .× 5 = 210

Explanation:

Here, we have changed 42 to 6 and 5 to 35 and then multiplied 6 × 35 which is 210.

Question 7.

Answer:

138 × 4 = 552.

Explanation:

Here, we have changed 138 to 276 and 4 to 2 and then multiplied 276 × 2 which is 552.

Question 8.

Answer:

21 × 8 = 168.

Explanation:

Here, we have changed 21 to 84 and 8 to 2 and then multiplied 84 × 2 which is 168.

Question 9.

Answer:

121 × 7 = 847.

Explanation:

Here, we have changed 121 to 11 and 7 to 77 and then multiplied 11 × 77 which is 847.

Question 10.

Answer:

125 × 4 = 500.

Explanation:

Here, we have changed 125 to 250 and 4 to 2 and then multiplied 250 × 2 which is 500.

Question 11.

Answer:

138 × 8 = 1,104.

Explanation:

Here, we have changed 138 to 276 and 8 to 4 and then multiplied 276 × 4 which is 1,104.

Question 12.

Answer:

303 × 6 = 1818.

Explanation:

Here, we have changed 303 to 101 and 6 to 18 and then multiplied 101 × 18 which is 1818.