Math Review Unit 2

Estimate/ Round

100

27

30

200

13

10

300

58

60

400

7

10

500

22

20

Add decimals

100

2.5 + 2.5

5.0

200

23.45 + 6.55

30.00

300

22.451 + 6.203

28.654

400

25.661 + 3.4

29.061

500

213.45 + 34.06

217.51

Vocabulary

100

The answer to addition

sum

200

The answer to multiplication

product

300

The answer to subtraction

difference

400

The answer to division

Quotient

500

When something is the same value. 4 = 4.0

equal

Subtract decimals

100

27.5 - 5.3

22.2

200

19.531 - 4.3

15.231

300

26.04 - 3.1

22.94

400

36.00 - 8.7

27.3

500

215.341 - 25.03

190.311

Random

100

Draw the model 1.45

drawing

200

56.371 + 2.13 - 1.731

56.770

300

Draw a model 3.73

drawing

400

Sarah has 3 ropes they are 3.45 inches, 2.64 inches, and 1.2 inches. How long in all?

7.29 inches

500

Alex has 3 ropes, 5.67 inches, 2.4 inches, and 1.75 inches. He cuts 1.25 inches off. How much is lefft?

8.57 inches