# 180 Days of Math for Fourth Grade Day 61 Answers Key

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## 180 Days of Math for Fourth Grade Answers Key Day 61

Directions Solve each problem.

Question 1.  Explanation:
The sum of 56 and 8 is 64.
First added 6 and 8 the sum is 14
4 is placed and 1 is taken as carry forward to the next number.

Question 2.
Color $$\frac{30}{100}$$.  Explanation:
$$\frac{30}{100}$$.
Colored 30 square units out of 100 square units

Question 3.
50 ÷ 5 = ______ Explanation:
50 ÷ 5 = 10
5 x 10 = 50
subtraction and multiplication are inversely proportional.

Question 4.
63 ÷ 9 = ___ Explanation:
63 ÷ 9 = 7
7 x 9 = 63
Subtraction and multiplication are inversely proportional.

Question 5.
What is the first odd number before 81?
______________
the first odd number before 81 is 79
Explanation:
a whole number that is not able to be divided by two into two equal whole numbers
The numbers 1, 3, 5, and 7 are odd numbers.

Question 6.
Fill in the missing number.
200, 400, ____, 800, 1,000
200, 400, 600, 800, 1,000
Explanation:
In the above pattern the missing number is 600
For every number 200 is added
The pattern is add by 200
200  + 200 = 400
400 + 200 = 600
600 + 200 = 800

Question 7.
Write the length in centimeters.
______________ The scale shows 3 and half centimeters
that is 3.5 cm’s
Explanation:
1 cm = 10 mm

Question 8.
___ yards = 72 inches
2 yards = 72 inches
Explanation:
1 yard = 3 feet
1 feet = 12 inches.
2 x 3 = 6
6 x 12 = 72

Question 9.
What shape is the base of a cylinder?
______________
Circle.
Explanation:
The base area of the cylinder is actually an area of a circle since the base of the cylinder is a circle

Question 10.
Complete the addition grid.

 + 7 15 18 23 25 28 19 29 39 