Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 6 Lesson 5 Using Mental Math to Divide to secure good marks & knowledge in the exams.
McGraw-Hill Math Grade 4 Answer Key Chapter 6 Lesson 5 Using Mental Math to Divide
Divide
Use mental math to find each quotient.
Question 1.
18 ÷ 9 = 2
Answer:
18 ÷ 9 = 2
Explanation:
Multiplication and division are inversely proportional
9 x 2 = 18
Question 2.
180 ÷ 9 = ___
Answer:
180 ÷ 9 = 20
Explanation:
Multiplication and division are inversely proportional
9 x 2 = 18
adding the zero
Question 3.
1,800 ÷ 9 = ____
Answer:
1,800 ÷ 9 = 200
Explanation:
Multiplication and division are inversely proportional
9 x 2 = 18
adding the zeros
Question 4.
14 ÷ 2 = ___
Answer:
14 ÷ 2 = 7
Explanation:
Multiplication and division are inversely proportional
2 x 7 = 14
Question 5.
140 ÷ 2 = ___
Answer:
140 ÷ 2 = 70
Explanation:
Multiplication and division are inversely proportional
2 x 7 = 14
adding the zeros
Question 6.
1,400 ÷ 2 = ___
Answer:
1,400 ÷ 2 = 700
Explanation:
Multiplication and division are inversely proportional
2 x 7 = 14
adding the zeros
Question 7.
360 ÷ 6 = ___
Answer:
360 ÷ 6 = 6
Explanation:
Multiplication and division are inversely proportional
6 x 6 = 36
adding the zeros
Question 8.
450 ÷ 5 = ___
Answer:
450 ÷ 5 = 90
Explanation:
Multiplication and division are inversely proportional
5 x 9 = 45
adding the zeros
Question 9.
320 ÷ 8 = ___
Answer:
320 ÷ 8 = 40
Explanation:
Multiplication and division are inversely proportional
8 x 4 = 32
adding the zeros
Question 10.
Kaylee used a basic fact to find the quotient for 180 ÷ 6. Write the division sentence of the basic fact she used.
Answer:
6 x 3 = 18
180 ÷ 6 = 30
Explanation:
Multiplication and division are inversely proportional
18 ÷ 6 = 3