iReady Unit 2

Understand Decimal Place Value/Read and Write Decimals

100

4 = ______ x 10

0.4

200

.04 = ____ x 10

.004

300

Which one is true?

.07 x 100 = .7

.7 / 10 = .07

.7 x 100 = .07

.07 / 10 = .7

.7 / 10 = .07

400

Write this number in standard form

three and fifty-four thousandths

3.054

500

Write this number in standard form

(8 x 1) + (1 x .01) + (6 x .001)

8.016

Understand Powers of 10

100

10 x 10 x 10 x 10 = 

10⁴

200

50 x 10^{3 =} 

50,000

300

5.26 x 10^{2 =} 

526

400

.6 / 10^{2 =} 

.006

500

900 / 10^{3 =} 

.9

Add and Subtract Fractions

100

What common denominator can be used when adding the following fractions?

1/2 , 2/5

10

200

What common denominator can be used to add the  following fractions?

3/4 , 1/6

12, 24, 36, 48

300

3/8 + 5/12 = 

19/24

400

3/4 - 3/8 = 

3/8

500

2 and 7/9 - 1 and 5/6 = 

17/18

Compare and Round Decimals

100

What is 7.429 rounded to the nearest hundredth?

7.43

200

Write out the entire expression

<, > or =

19.657 ______ 19.67

19.657 < 19.67

300

Write out the entire expression

<, > or =

70.24 __ 70.240

70.24 = 70.240

400

True or False

6.647 rounded to the nearest tenth is 6.6

True

500

What is 12.807 rounded to the nearest hundredth?

12.81

Add and Subtract Decimals

100

7.38 + 11.5 = 

18.88

200

5.67 + 2.5 = 

8.17

300

.7 - .31 = 

.39

400

4.28 - 2.85 = 

1.43

500

Julie has three pieces of ribbon. The lengths are 232.7 cm, 232.29 cm, and 254.1 cm. What is the difference in length between the longest and shortest piece of ribbon?

21.81