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

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

**Directions Solve each problem.**

Question 1.

What is 16 more than 14?

____30_____

Answer:

30,

Explanation:

Given to find 16 more than 14 is

16

+14

30

Question 2.

Answer:

32,

Explanation:

given to find the product of

8

X 4

32

Question 3.

What are 8 groups of 5?

______40________

Answer:

40,

Explanation:

Given to find 8 groups of 5 means

8 X 5 = 40.

Question 4.

Circle groups of 2.

Answer:

Explanation:

Circled groups of 2 as shown above.

Question 5.

Write the number for 10 tens.

_______100_______

Answer:

100,

Explanation:

Asked to write the number for 10 tens is

10 X 10 = 100.

Question 6.

10 0 = 10

Answer:

+ or -,

Explanation:

Given to find missing symbol 10 __ 0 = 10,

as result is 10 and the other number is 0 so if

add or subtract 0 the result is same so the symbol can be

+ or -.

Question 7.

What time is shown?

_____7:15_________

Answer:

7:15,

Explanation:

The time shown in the clock is 7:15.

Question 8.

What is the surface area of the rectangle?

___8___ squares

Answer:

8,

Explanation:

Given to find surface area of the rectangle which has total 8 squares,

therefore it is 8.

Question 9.

How many angles are there in a square?

______4 angles________

Answer:

4 angles,

Explanation:

As we know a square have 4 sides and 4 angles.

All four internal angles of a square are equal

(each being 360°/4 = 90°, a right angle).

therefore a square has 4 angles.

Question 10.

Triple 9, and then add 14.

____41______

Answer:

41,

Explanation:

Given to triple 9 and then add 14 so

triple of 9 is 3 x 9 is 27 and adding 14 is

27

+14

41

therefore tripling 9 and adding 14 is 41.