Math Review

Doubles and Halves

100

What is double 30?

60

200

What is half of 30?

15

300

What is double 18?

36

400

What is half of 120?

60

500

What is half of 398?

199

Division

100

20 ÷  2

10

200

60 ÷  6

10

300

18 ÷  5

3 r3

400

67 ÷  8

8 r3

500

245 ÷  12

20 r5

Multiplication

100

7 x 3

21

200

14 x 6

84

300

28 x 17

476

400

45 x 12 

540

500

120 x 8

960

Word Problems

100

Emily has 8 candies, and her friend gives her 5 more. How many candies does Emily have now?

8+5=13

200

Tommy had 15 toy cars. He gave 7 toy cars to his friend. How many toy cars does Tommy have now? 

15−7=8

300

There are 4 boxes, and each box has 6 apples. How many apples are there in total?

4×6=24

400

Sally has 18 cookies, and she wants to share them equally among 3 friends. How many cookies will each friend get?

Answer: 18÷3=6

500

Tom has 30 rocks. He finds 20 more rocks in the playground. Later, he gives 10 rocks to his friend. Then, he throws half his rocks off a mountain. How many rocks does he have left?

20 rocks

1. Tom starts with 30 rocks.
2. He finds 20 more rocks: 30+20=5030+20=50 rocks.
3. He gives 10 rocks to his friend: 50−10=4050−10=40 rocks.
4. Tom throws half of his rocks off a mountain: 40÷2=2040÷2=20 rocks.

Graphs, Charts, and Time

100

Make tally marks for the number of desks in the classroom.

.....

200

Make a Venn Diagram about our class. 

- People wearing glasses

- People wearing black

Student answers

300

How long is two classes at BPS?

1 hour and 20 minutes

400

What was the time one hour earlier then 5:30

4:30

500

What will the time be 2 hours and 30 minutes later than 2:45?

5:15