Place Value Review

Powers of 10

100

10^{3 =} What?

1000

200

How is 10x10x10x10x10 written as an exponent? 

10⁵

300

If you multiply a number in the tens place by 10, what place value would the number be in? 

Hundreds 

400

Instead of saying, 5 x 10x10x10x10, what can we say?

5 x 10⁴

500

In order to move back 2 place values, what do we need to multiply by?

1/10

Rounding Decimals

100

Round 3.43 to the nearest tenth.

3.4

200

Round 32.785 to the nearest hundredth.

32.79

300

When rounding decimals, you underline the place value you are rounding to and look _______.

Next door. 

400

Round 7.2893 to the nearest thousandths.

7.29

500

Round 47.1637 to the nearest tenth, hundredth, and thousandths.

Tenth- 47.2

Hundredth- 47.16

Thousandths- 41.164

Comparing Decimals

100

Which decimal is bigger? 

4.2

4.19

4.21

4.21

200

What is a decimal that is bigger than 9.1 but lower than 9.2?

9.11-9.19

300

FREE POINTS!

Sike, lose 200 points. 

400

Put the following decimals in order from greatest to least.

2.4   2.399  2.401   2.41

 2.41     2.401   2.4  2.399

500

Zachary talked for 5.87 minutes of the class. Raymond talked for 5.859 minutes of class. Who talked the MOST?

Zachary 

Decimals in Word Form

100

four and twenty seven hundredths 

4.27

200

Write 53.9 in word form.

fifty three and nine tenths

300

nine and seven hundredths

9.07

400

sixty four and 4 thousandths

64.004

500

seventy six and thirty eight  thousandths 

76.038