By accessing our **180 Days of Math for Third Grade Answers Key Day 138 **regularly, students can get better problem-solving skills.

## 180 Days of Math for Third Grade Answers Key Day 138

**Directions: Solve each problem.**

Question 1.

30 – 18 =

Answer:

30 – 18 =

Explanation:

Perform subtraction on above two given numbers. Subtract 18 from 30 the difference is equal to 12.

Question 2.

How many hands are there on 8 children?

Answer:

1 children have 2 hands.

Multiply 2 hands with 8 children the product is equal to 16 hands.

2 hands x 8 children = 16 hands

**16 hands** are there on 8 children.

Question 3.

8 Ã— 9 =

Answer:

8 Ã— 9 =

Explanation:

Perform multiplication operation on above two given numbers. Multiply 8 with 9 the product is equal to 72.

Question 4.

What number follows 719?

Answer:

The number follows 719 is **720**.

Question 5.

Write 248 in expanded notation.

Answer:

The expanded notation of 248 is **200 + 40 + 8**.

Explanation:

It is one type of expressing the numbers by showing the value of the each digit is called as expanded notation. The expanded notation of 248 is 200 + 40 + 8.

Question 6.

Fill in the missing number.

317, 312, 307, ______ , 297

Answer:

The given series is 317, 312, 307, ______ , 297.

The difference between first and second numbers is 5.

317 – 312 = **5**

The difference between second and third numbers is 5.

312 – 307 = **5**

So, subtract 5 from number 307 in the sequence number. The difference is 302.

**307 – 5 = 302**

The missing number in the given series is **302**.

The next number in the sequence is 317, 312, 307,** 302** , 297.

Question 7.

True or false?

A pen has a mass greater than 1 kg.

Answer:

**False**, A pen doesn’t has a mass greater than 1 kg. Generally a pen has a mass of less than 25 grams.

Question 8.

4 cups = __________ quart

Answer:

4 cups = **1** quart

Question 9.

Draw all the lines of symmetry.

Answer:

The lines of symmetry are drawn on the above hexagon.

Question 10.

Jacqueline has 15 outfits in her closet. One-third of the outfits are dressy clothes for fancy occasions. How many dressy outfits does Jacqueline have?

Answer:

Jacqueline has 15 outfits in her closet.

One-third of the outfits are dressy clothes for fancy occasions.

Multiply 15 outfits with 1/3 the product is equal to 5 outfits.

15 x 1/3 = 5 outfits

Jacqueline have **5 dressy outfits**.