Chapter 2 decimals

vocabulary

100

what is a number written in words called?

word form

200

What is the numerical form of a number called?

standard form

300

What is is called when decimals have the same value?

equivalent decimals

400

what is it called when it shows the value of each digit?

expanded form

500

What is it called when we look at the number to the right of the place value to help determine whether to stay the same up go up to the next number.

Rounding

word/ standard/ expanded form

100

Write  4.56 in word form

four and fifty- six hundredths

200

Write 0.567 in word form

five hundred sixty- seven thousandths

300

Write five hundred thirty- one thousandths in standard form

0. 531

400

write 4. 97 in expanded form

(4 x 1) + (9x 0.1) + (7 x 0.01) Or

4 + 0.9 + 0.07 or

( 4 x 1) + ( 9 x 1/10) + ( 7 x 1/100)

500

What is 409. 23 in expanded form?

( 4 x 100) + ( 9 x 1) + ( 2 x 0.1) + ( 3 x 0.01) OR

400 + 9 + 0.2 + 0.3 OR
(4 x 100) + (9 x 1) + ( 2 x 1/10) + ( 3 x 1/100)

place value

100

What is the place of the 9 in this number?

28.931

tenths

200

What is the place of the 1 in 28.931?

thousandths

300

What is the place of the 2 in 28.931?

tens

400

What is the place of the 8 in 28.931?

ones

500

What is the place of the 3 in 28.931?

tenths

Comparing and ordering Decimals

100

compare using < ,>, =

4.10 _____ 4.394

<

200

compare using < , > ,=

2.340 ____ 2.34

=

300

compare using <, > ,=

44. 23 ____ 4.423

>

400

order from least to greatest

0.234    0.113   0.143

0.113   0.143   0.234

500

order from greatest to least

1.56   11.56  1.156

11.56   1.56    1.156

Rounding

100

round to the nearest whole number

5.67

5

200

round to the nearest whole number 

12.34

12

300

round to the nearest tenth

0.234

0.2

400

round to the nearest hundredth 

3.457

3.46

500

round to the nearest hundredth 

0.209

0.210