# 180 Days of Math for Fourth Grade Day 138 Answers Key

By accessing our 180 Days of Math for Fourth Grade Answers Key Day 138 regularly, students can get better problem-solving skills.

## 180 Days of Math for Fourth Grade Answers Key Day 138

Directions: Solve each problem.

Question 1.  Thus the difference between 28 and 13 is 15.

Question 2.
Calculate 50 percent of 40.
50% of 40
50/100 × 40 = 5 × 4 = 20
So, 50 percent of 40 is 20.

Question 3.
76 ÷ 8 = __________ Thus the quotient is 9 and the remainder is 4.

Question 4.  Thus the quotient is 14 and the remainder is 5.

Question 5.
How many digits are in 9,092?
Answer: There are 5 digits is 9,092.

Question 6.
100 ÷ 2 = × 5
100 ÷ 2 = x × 5
50 = x × 5
5x = 50
x = 50/5
x = 10
100 ÷ 2 = 10 × 5

Question 7.
How many 250-milliliter scoops of ice cream are in a 6-liter carton?
We have to find out how many 250-milliliter scoops of ice cream are in a 6-liter carton.
1 liter = 4 × 250 ml
6 liters = 6 × 4 = 24 × 250 ml
Thus there are 24 250-milliliter scoops of ice cream in a 6-liter carton.

Question 8.
48 hours = _______ days
1 day = 24 hours
x = 48 hours
x × 24 = 48
x = 48/24
x = 2
Thus 2 days = 48 hours

Question 9.
Is this a right angle?  