All the solutions provided in **McGraw Hill Math Grade 5 Answer Key PDF Chapter 3 Lesson 5 Multiplying by 2-Digit Whole Numbers** are as per the latest syllabus guidelines.

## McGraw-Hill Math Grade 5 Answer Key Chapter 3 Lesson 5 Multiplying by 2-Digit Whole Numbers

**Multiply and then describe the strategy you used to solve each problem.**

Question 1.

49 × 50 = __2450__

__I added 1 to 49 and multiplied 50 × 50 = 2500. Then I subtracted 50 to find the answer.__

Question 2.

43 × 52 = ____

Answer:

43 × 52 = 2,236.

Explanation:

Here, we have subtracted 3 from 43 and subtracted 2 from 52 multiplied by 40 × 50 = 2,000. Then added 236.

**Solve.**

Question 3.

Answer:

31 × 23 = 713.

Explanation:

Here, we have subtracted 1 from 31 and 3 from 23 then multiplied 30 × 20 which is 600. Then added 113.

Question 4.

Answer:

62 × 17 = 1054.

Explanation:

Here, we have subtracted 2 from 62 and added 3 to 17 then multiplied 60 × 20 which is 1200. Then subtracted 146.

Question 5.

Answer:

70 × 80 = 5,600.

Explanation:

By multiplying 70 × 80 we will get 5,600.

Question 6.

Answer:

38 × 19 = 78.

Explanation:

Here, we have added 2 to 38 and added 1 to 19 then multiplied 40 × 20 which is 800. Then subtracted 78.

Question 7.

Answer:

60 × 11 = 660.

Explanation:

Here, we have subtracted 1 from 11 and then multiplied 60 × 10 which is 600. Then added 60.

Question 8.

Answer:

85 × 70 = 350.

Explanation:

Here, we have subtracted 5 from 85 and then multiplied 80 × 70 which is 5,600. Then subtracted 350.

Question 9.

Answer:

173 × 19 = 3,287.

Explanation:

Here, we have added 1 to 19 and then multiplied 173 × 20 which is 3,460. Then subtracted 173.

Question 10.

Answer:

123 × 15 = 1,845.

Explanation:

Here, we have added 5 to 15 and then multiplied 123 × 20 which is 2,460. Then subtracted 615.

Question 11.

Toni is buying peaches at the farmers’ market. She buys 12 baskets of peaches. Each basket holds 12 peaches. How many peaches does she buy?

Answer:

The number of peaches she bought is 144 peaches.

Explanation:

Given that Toni bought 12 baskets of peaches and each basket holds 12 peaches. So the number of peaches she bought is 12×12 = 144 peaches.