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.