# 180 Days of Math for Fourth Grade Day 31 Answers Key

By accessing our 180 Days of Math for Fourth Grade Answers Key Day 31 regularly, students can get better problem-solving skills.

## 180 Days of Math for Fourth Grade Answers Key Day 31

Directions Solve each problem.

Question 1.  Explanation:
Perform addition operation on above two given numbers. Add 12 with 14 the sum is 26.

Question 2.
$$\frac{1}{4}$$ of 36 is ___
Perform multiplication operation. Multiply 1/4 with 36.
$$\frac{1}{4}$$ x 36
= 1 x 9
= 9
So, $$\frac{1}{4}$$ of 36 is 9.

Question 3.
Divide 20 by 5. ______________
20 ÷ 5 = 4
Explanation:
Perform division operation on above two given numbers. Divide 20 by 5 the quotient is 4.

Question 4.  Explanation:
Perform division operation on above given numbers. Divide 40 by 8 the quotient is 5.

Question 5.
Write the smallest 4-digit numeral using 0, 2, 8, and 7.
______________
The given numbers are 0, 2, 8, and 7.
To get the smallest 4-digit numeral. We have to arrange the given numbers from smallest to largest.
The numbers from smallest to largest are 0, 2, 7, 8.
Here, the zero has no value when we place zero as first digit. So, place zero after 2.
The smallest 4-digit numeral using 0, 2, 8, and 7 is 2,078.

Question 6.
Fill in the missing number.
20, 40, 60, ____, 100
The given series is 20, 40, 60, ____, 100.
The difference between first and second numbers is 20.
40 – 20 = 20
The difference between second and third numbers is 20.
60 – 40 = 20
So, add 20 to the number 60 in the sequence number. The sum is 80.
60 + 20 = 80
The missing number in the given series is 80.
The next number in the sequence is 20, 40, 60, 80, 100.

Question 7.
Write the length in millimeters.
______________ 1 centimeter (cm) = 10 millimeter (mm)
Conversion from centimeters to millimeters:
2.5 cm x 10 mm = 25mm
The line length is 25 millimeters.
Explanation:
In the above image we can observe a scale with units as centimeters. The black line is starting at 0 cm and ending at 2.5 cm. So the total line length is 2.5 centimeters. To convert centimeters to millimeters we need to multiply 2.5 cm with 10 mm the product is equal to 25 millimeters. The line length is 25 mm.

Question 8.
If the temperature were 89 degrees Fahrenheit, would you wear a bathing suit or a jacket?
_____________________
I wear bathing suit, if the temperature is 89 degrees Fahrenheit.

Question 9.
What type of prism is shown?
________________ The type of prism as we can observe in the above image is triangular prism.

Question 10.
Complete the subtraction grid.

 – 44 48 53 61 72 75 19 29 39 