By accessing our **180 Days of Math for Third Grade Answers Key Day 85 **regularly, students can get better problem-solving skills.

## 180 Days of Math for Third Grade Answers Key Day 85

**Directions Solve each problem.**

Question 1.

Answer:

Explanation:

Working each column from right to left

8 is greater than 4 so you must regroup:

Take 1 from 6, so 6 becomes 5.

Add 10 to 4, so 4 becomes 14.

Question 2.

3 × 7 =

Answer:

21

Explanation:

3 x 7 = 21

The product of 3 and 7 is 21

7 x 3 = 21

Question 3.

Draw 5 groups of 7 hats. How many hats are there?

__________________

Answer:

35

Explanation:

5 x 7 = 35

Question 4.

Answer:

Explanation:

4 x 6 = 24

We have the equation:

24 ÷ 6 = 4

division and multiplication are inversely proportional.

Question 5.

3 tens = ____

Answer:

30

Explanation:

3 tens = 30

3 x 10 = 30

three times ten equals to thirty.

Question 6.

× 2 = 18

Answer:

9

Explanation:

9 x 2 = 18

18 ÷ 2 = 9

Multiplication and division are inversely proportional.

Question 7.

Write in order from heaviest to lightest: chair, book, desk.

__________________

Answer:

Desk, Chair and book

Explanation:

Desk will be heavier than desk and book

then after it comes to chair

chair is heavier than book

Question 8.

What is the volume?

________cubic units

Answer:

5 cubic units

Explanation:

1 cubic unit is the amount of space that a unit cube occupies.

Volume of the cube is number of cubes

so, 5 cubic units.

Question 9.

How many edges does the solid have?

__________________

Answer:

2 edges.

Explanation:

A cylinder has 2 edges.

A cylinder has 2 faces and 1 curved surface

Question 10.

If you can read 20 pages in half an hour, how many pages can you read in 2 hours?

__________________

Answer:

80 pages

Explanation:

A hour has 30 minutes

1 hour has 2 half an hours

so, 4 x 20 = 80