# 180 Days of Math for Fourth Grade Day 21 Answers Key

By accessing our 180 Days of Math for Fourth Grade Answers Key Day 21 regularly, students can get better problem-solving skills.

## 180 Days of Math for Fourth Grade Answers Key Day 21

Directions Solve each problem.

Question 1.
26 + 13 = ___
26 + 13 = 39
Explanation:
Perform addition operation on above two given numbers. Add 26 with 13 the sum is 39.

Question 2.
$$\frac{1}{8}$$ of 24 is ___
$$\frac{1}{8}$$ x 24 = 3
So, $$\frac{1}{8}$$ of 24 is 3.
Explanation:
Perform multiplication operation on above two given numbers. Multiply 1/8 with 24 the product is 3. So, 1/8 of 24 is 3

Question 3.

Explanation:
Perform division operation on above two given numbers. Divide 20 by 5 the quotient is 4.

Question 4.
56 ÷ 8 = ___
56 ÷ 8 = 7
Explanation:
Perform division operation on above two given numbers. Divide 56 by 8 the quotient is 7.

Question 5.
What is the place value of 9 in 918?
______________
The place value of 9 in 918 is hundreds.
Explanation:
The order of place value of digits of a number starts from right to left. The value of the digits are units, tens, hundreds, thousands, ten thousand, a hundred thousand, and so on.

Question 6.
Fill in the missing number.
8, 12, 16, ___, 24
The given series is 8, 12, 16, ___, 24.
The difference between 8 and 12 is 4.
12 – 8 = 4
The difference between 12 and 16 is 4.
16 – 12 = 4
So, add 4 to the number 16 in the series. The sum is 20.
16 + 4 = 20
The missing number in the given series is 20.
Now, the series is 8, 12, 16, 20, 24

Question 7.
Write the line length in centimeters.
_____________

In the above image we can observe a scale with units as centimeters. The black line is starting at 0 cm and ending at 3.0 cm. So the total line length is 3.0 centimeters.

Question 8.
If you wanted a glass of water, would you pour a cup or a gallon of water?
_____________
If I wanted a glass of water, I would pour in a cup.

Question 9.
Draw the axes of symmetry.

Drawn the axes of symmetry. A line through a shape so that each side is a mirror image.

Question 10.
Write two odd numbers that total the even number 8.
_____________
1 + 7 = 8
The two odd numbers that total the even number 8 is 1 and 7.
3 + 5 = 8
The two odd numbers that total the even number 8 is 3 and 5.

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