Module 1 Review

Unit Form

100

2 tenths + 11 hundredths=

.211

two hundred eleven thousandths

200

3 + 49 hundredths=

3.49

3 and 49 hundredths

300

45 tenths + 45 hundredths=

4.95

4 and 95 hundredths

400

342 hundredths + 7 tenths=

4.12

4 and 12 hundredths

500

13 tenths + 8 tenths + 32 hundredths=

2.42

2 and 42 hundredths

Using Exponents (Powers of 10)

100

4.13 X 10³⁼

^{*use place value chart}

4,130

200

413,000 / 10²⁼

*use place value chart

4,130

300

.3 X 10=

3

400

.007 X 10³⁼

7

500

.3 X 10²⁼

^{*use place value chart}

30

Expanded Form

100

(2 X 1/10) + (11 X 1/100)=

.211

200

(13 X 1/10) + (8 X 1/10)=

2.1

300

2 + (31 X 1/10) + (14 X 1/100)=

5.24

400

14 + (72 X 1/10) + (4 X 1/1000)=

21.24

500

(.3 X 10²) + (.007 x 10³) =

37

Mult./Division

100

4.6 X 3=

13.8

200

4.2 X 3=

*use area model

12.6

300

425,000 / 1,000=

425

400

4.2 / 6=

.7

500

29.925 / 5=

5.985

Rounding

100

Round 10.357 to the nearest tenth.

10.4

200

Round 12.062 to the nearest tenth.

12.1

300

Round 7.506 to the nearest hundredth. 

7.51

400

Round 5.985 to the nearest one. 

6

500

Round 34, 657 to the nearest thousand. 

35,000