By accessing our **180 Days of Math for Second Grade Answers Key Day 79 **regularly, students can get better problem-solving skills.

## 180 Days of Math for Second Grade Answers Key Day 79

**Directions Solve each problem.**

Question 1.

Write the numeral for six hundred forty-three.

__________

Answer:

643

Explanation:

six hundred = 600

forty-three = 43

600 + 43 = 643

Question 2.

Complete.

Double 2 = ____

Answer: 4

Explanation:

Double the number means adding the number to itself.

2 + 2 = 4

Question 3.

What is 9 less than 12?

__________

Answer: 3

Explanation:

9 less than 12 means 12 – 9 = 3

Question 4.

4 + 7 = 11 +

Answer: 0

Explanation:

Let the unknown number be x

4 + 7 = 11 + x

11 = 11x

x = 11 – 11

x = 0

Question 5.

Color the correct cross-section.

Answer:

Explanation:

Square is a polygon, with 4 equal sides.

Question 6.

Is a cat longer or shorter than a yard?

_______________

Answer:

Cat is shorter

Explanation:

1 yard = 3 feet

So, cat is less than 3 feet.

Question 7.

How many cars are green?

_______________

Answer:

17 cars

Explanation:

From the above data green cars have complete 3 set of tally marks and 2.

So, 3 x 5 = 15 + 2 = 17

Question 8.

There are 9 mommy ducks. There are 43 ducklings. How many more ducklings are there than mommy ducks?

__________________

Answer:

34 ducklings

Explanation:

There are 9 mommy ducks.

There are 43 ducklings.

Number of more ducklings than mommy ducks = 43 – 9 = 34