Practice the problems of Math in Focus Grade 2 Workbook Answer Key Cumulative Review Chapters 5 and 6 to score better marks in the exam.
Math in Focus Grade 2 Cumulative Review Chapters 5 and 6 Answer Key
Concepts and Skills
Draw 
Question 1.
Draw 4 groups of 3
________________
Answer:
Question 2.
Draw 3 groups of 4
_________________
Answer:
Find the missing numbers.
Question 3.
2 + 2 + 2 + 2 + 2 + 2 = ___ × 2
Answer:
2 + 2 + 2 + 2 + 2 + 2 = 12
6 × 2 = 12
Question 4.
3 + 3 + 3 + 3 + 3 is ___ groups of ____
Answer:
3 + 3 + 3 + 3 + 3 = 15
3 x 5 = 15
5 groups of 3
Question 5.
Answer:
3 × 4 = 12
12 ÷ 4 = 3
Explanation:
By multiplying 3 with 4 we get 12,
By dividing 12 with 4 we get 3.
Question 6.
Answer:
24 ÷ 3 = 8
24 ÷ 8 – 3
Explanation:
By dividing 24 with 3 we get 8,
By dividing 24 with 8 we get 3,
Even after changing the addends we get the sum as same.
Find the missing numbers.
Question 7.
Divide 20 socks so there are 5 socks in each group.
Subtract groups of 5 until there is nothing left.
20 – _____ – _____ – _____ – _____ = ______
Groups of five are subtracted ___ times.
20 ÷ 5 = ___
Answer:
Subtract groups of 5 until there is nothing left.
20 – 5 – 5 – 5 – 5 = 0
Groups of five are subtracted 4 times.
Cross out what does not belong.
Question 8.
Answer:
Explanation:
By adding 7 groups of 5 we get 35.
Question 9.
Answer:
Explanation:
By subtracting 3 groups of 2 from 6 we get 0.
Fill in the blanks.
Question 10.
Divide 16 fruit bars equally on 4 trays.
16 ÷ ___ = ____
There are ___ fruit bars on each tray.
Answer:
16 ÷ 4 = 4
Explanation:
By dividing 16 fruit bars on 4 trays,
There are 4 fruit bars on each tray.
Question 6.
6 bugs are on each of the 3 branches
6 × ___ = ___
There are ___ fruit bars on each tray.
Answer: 6 × 3 = 18
Explanation:
There are 6 bugs on each of the 3 branches,
By multiplying 6 with 3 we get 18,
Therefore, there are 18 fruit bars on each tray.
Question 12.
Divide 20 crayons equally among 5 children.
20 ÷ ___ = ____
Each child gets ___ crayons.
Answer:
20 ÷ 5 = 4
Explanaton:
By dividing 20 crayons among 5 children,
Therefore, each child gets 4 crayons.
Skip-count.
Question 13.
2, 4, 6, ___, ___, ___, ___, ___, ____, ____
Answer: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20
Need to add 2 to each number
Question 14.
5, 10, 15, ___, ___, ___, ___, ___, ____, ____
Answer: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50
Need to add 5 to each number.
Question 15.
10, 20, 30, ___, ___, ___, ___, ___, ____, ____
Answer: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100
Need to add 10 to each number.
Fill in the blanks.
Question 16.
2 groups of 2 = ___ × ____ = _____
Answer: 2 × 2 = 4
Question 17.
5 groups of 2 = ___ × ____ = _____
Answer: 5 × 2 = 10
Question 18.
6 groups of 5 = __ × ___ = _____
Answer: 6 × 5 = 30
Question 19.
7 groups of 5 = __ × ___ = ____
Answer: 7 × 5 = 35
Use the dot paper to find the missing numbers.
Question 20.
Answer:
Explanation:
By multiplying 6 with 2 we get 12,
By multiplying 2 with 6 we get 12,
By changing the addends we get the same sum.
Question 21.
Answer:
Explanation:
By multiplying 4 with 5 we get 20,
By multiplying 5 with 4 we get 20,
By changing the addends we get the same sum.
Complete the multiplication sentences.
Question 22.
4 × 2 = ___
2 × 4 = ___
Answer:
4 × 2 = 8
2 × 4 = 8
Explanation:
By multiplying 4 with 2 we get 8,
By multiplying 2 with 4 we get 8,
By changing the addends we get the same sum.
Question 23.
7 × 2 = ___
2 × 7 = ____
Answer:
7 × 2 = 14
2 × 7 = 14
Explanation:
By multiplying 7 with 2 we get 14,
By multiplying 2 with 7 we get 14,
By changing the addends we get the same sum.
Question 24.
3 × 5 = ___
5 × 3 = ___
Answer:
3 × 5 = 15
5 × 3 = 15
By multiplying 3 with 5 we get 15,
By multiplying 5 with 3 we get 15,
By changing the addends we get the same sum.
Question 25.
9 × 5 = ___
5 × 9 = ___
Answer:
9 × 5 = 45
5 × 9 = 45
Explanation:
By multiplying 9 with 5 we get 45,
By multiplying 5 with 9 we get 45,
By changing the addends we get the same sum.
Question 26.
4 × 10 = ___
10 × 4 = ___
Answer:
4 × 10 = 40
10 × 4 = 40
Explanation:
By multiplying 4 with 10 we get 40,
By multiplying 10 with 4 we get 40,
By changing the addends we get the same sum.
Question 27.
6 × 10 = ___
10 × 6 = ___
Answer:
6 × 10 = 60
10 × 6 = 60
Explanation:
By multiplying 6 with 10 we get 60,
By multiplying 10 with 6 we get 60,
By changing the addends we get the same sum.
Fill in the blanks.
Question 28.
___ × 2 = 16
Answer: 8 × 2 = 16
Question 29.
___ × 2 = 18
Answer: 9 × 2 = 18
Question 30.
____ × 5 = 40
Answer: 8 × 5 = 40
Question 31.
___ × 5 = 25
Answer: 5 × 5 = 25
Question 32.
____ × 10 = 70
Answer: 7 × 10 = 70
Question 33.
___ × 10 = 50
Answer: 5 × 10 = 50
Complete the multiplication sentences.
Question 34.
___ × 2 = 10 10 ÷ 2 = ____
Answer: 5 × 2 = 10 10 ÷ 2 = 5
Question 35.
___ × 5 = 10 30 ÷ 5 = ____
Answer: 2 × 5 = 10 30 ÷ 5 = 6
Question 36.
___ × 10 = 20 20 ÷ 10 = ____
Answer: 2 × 10 = 20 20 ÷ 10 = 2
Problem Solving
Solve.
Question 37.
A grocer sells 5 oranges in a bag. Mr. Diaz buys 6 bags of oranges. How many oranges does he buy in all? He buys oranges in all.
He buys ____ oranges in all.
Answer: He buys 30 oranges in all.
Explanation:
Given,
A grocer sells 5 oranges in a bag,
Mr. Diaz buys 6 bags of oranges,
By multiplying 5 with 6 we get 30,
Therefore, he buys 30 oranges.
Question 38.
Shauna puts some chairs in rows of 9. There are 2 rows of chairs. How many chairs are there?
There are ___ chairs.
Answer: There are 18 chairs.
Explanation:
Given,
Shauna puts some chairs in rows of 9,
There are 2 rows of chairs,
By multiplying 9 with 2 we get 18,
Therefore, there are 18 chairs.
Question 39.
Ling’s Travel has 10 new alarm clocks. Each clock needs 4- batteries. How many batteries are needed in all?
____ batteries are needed in all.
Answer: 40 batteries are needed in all.
Explanation:
Given,
Ling’s Travel has 10 new alarm clocks,
Each clock needs 4 batteries,
By mutliplying 10 with 4 we get 40,
Therefore, 40 batteries are needed for all 10 alarm clocks
Question 40.
There are 18 seashells. They are divided into 2 equal groups. How many seashells are in each group?
___ seashells are in each group.
Answer: 9 seashells are in each group.
Explanation:
Given,
There are 18 seashells,
They are divided into 2 equal groups,
By dividing 18 with 2 we get 9,
Therefore, each group gets 9 seashells.
Question 41.
Mr. Jenkins spends $30 on books. Each book costs $10. How many books does Mr. Jenkins buy?
Mr. Jenkins buys ___ books.
Answer: Mr. Jenkin buys 3 books.
Explanation:
Given,
Mr. Jenkins spends $30 on books,
Each book costs $10,
By dividing 30 with 10 we get 3,
Therefore, Mr. Jenkin buys 3 books.
Question 42.
The school chef has 30 mini pizzas. She divides them equally among a few children.
a. If each child gets 5 mini pizzas, how many children are there?
b. If there are 10 children, how many mini pizzas will each child get?
a. There are ___ children.
Answer: There are 6 children
Explanation:
Given,
There are 30 mini pizzas,
Each child gets 5 mini pizzas,
By dividing 30 with 5 we get 6,
Therefore, there are 6 children and each child gets 5 mini pizzas.
b. Each child will get ___ mini pizzas.
Answer: Each child will get 3 mini pizzas.
Explanation:
Given,
There are 30 mini pizzas,
There are 10 children,
By dividing 30 with 10 we get 3,
Therefore, each child will get 3 mini pizzas.