By accessing our **180 Days of Math for Third Grade Answers Key Day 121 **regularly, students can get better problem-solving skills.

## 180 Days of Math for Third Grade Answers Key Day 121

**Directions: Solve each problem.**

Question 1.

18 + 6 =

Answer:

18 + 6 =

Explanation:

Perform addition operation on above two given numbers. Add 18 to 6 the sum is 24.

Question 2.

Answer:

Explanation:

Perform multiplication operation on above two given numbers. Multiply 24 with 5 the product is 120.

Question 3.

How many paws are on 3 dogs?

Answer:

There are 4 paws on one dog.

To calculate paws on 3 dogs we need to perform multiplication operation.

Multiply 4 paws with 3 dogs.

4 x 3 = **12 paws**

There are 12 paws on 3 dogs.

Question 4.

There is a group of triangles with a total of 15 sides. How many triangles are there?

Answer:

A triangle has three sides.

Given that a group of triangles having 15 sides total.

1 triangle = 3 sides

? triangles = 15 sides

(1 triangle x 15 sides)/ 3 sides

= 1 triangle x 5

= 5 triangles

There are **5 triangles **with a total of 15 sides.

Question 5.

Which is larger: \(\frac{17}{100}\) or \(\frac{27}{100}\)?

Answer:

Given fractions are \(\frac{17}{100}\), \(\frac{27}{100}\)

17/100 = 0.17

27/100 = 0.27

So, \(\frac{27}{100}\) is larger.

Question 6.

× 5 = 35

Answer:

× 5 = 35

Explanation:

To get the product 35 we need to perform multiplication operation. If we multiply 7 with 5 then we get the product as 35. The missing multiplier is 7.

Question 7.

Does a sheet of paper have a mass of more or less than one kilogram?

Answer:

We know that one kilogram is equal to 1000 grams.

A sheet of paper has mass **less** than one kilogram.

Question 8.

It is 7:20. What time will it be in 20 minutes?

Answer:

The given time is 7:20.

After 20 minutes the time will be **7:40**.

Question 9.

List the angles in order from smallest to largest.

Answer:

The angle of option A is greater than 90 degrees less than 180 degrees.

The angle of option B is less than 90 degrees.

The angle of option C is 90 degrees.

So, the above angles from smallest to largest are **B, C, A**.

Question 10.

If you add 71 to me, you get 100. What number am I?

Answer:

The given number is 71.

If we add 71 to some number then we get the sum as 100.

Add 71 to 29 the sum is 100

71 + **29** = 100

The number is 29.