Compare and Order Decimals

Compare Positive Decimals

100

1.29 _____ 1.27

1.29 > 1.27

200

94.365555 _____ 94.3653

94.36555555 > 94.3653

300

6.2 _____ 6 3/8

6.2 < 6 3/8

400

0.007 _____ 0.0022

0.007 > 0.0022

500

184.3897 _____ 184 2/11

184.3897 > 184 4/11

Compare Negative Decimals

100

-0.4 _____ -0.5

-0.4 > -0.5

200

-0.01 _____ -0.3

-0.01 > -0.3

300

-0.04 _____ -0.005

-0.04 < -0.005

400

-0.724 _____ -3/4

-0.724 > -3/4

500

-0.0750 _____ -7/10

-0.0750 > -7/10

Order Decimals from Greatest to Least

100

1.28, 1.31, 1.29, 1.3

1.31, 1.3, 1.29, 1.28

200

1.662, 1.62, 0.62, 0.662

1.662, 1.62, 0.662, 0.62

300

20.3782, 21.0050, 20.3463, 20.6004

21.0050, 20.6004, 20.3782, 20.3463

400

2.09, 2.009, 2.0901, 2.1

2.1, 2.0901, 2.09, 2.009

500

-4.141, -4.114, -4.441, -4.4

-4.114, -4.141, -4.4, -4.441

Order Decimals from Least to Greatest

100

0.24, 0.35, 0.68, 0.9

0.24, 0.35, 0.68, 0.9

200

9.04, 9.4, 9.102, 9.12

9.04, 9.102, 9.12, 9.4

300

0.6118, 0.61, 0.618, 0.6128

0.61, 0.6118, 0.6128, 0.618

400

-5.2, -6.801, -5.1, -5.05

-6.801, -5.2, -5.1, -5.05

500

-17.457, -17.419, -17.415, -17.451

-17.457, -17.451, -17.419, -17.415

Word Problems

100

The relative atomic masses of nickel, cobalt, and iron are 58.70, 58.9332, and 55.847, respectively. Which element has the greatest mass? The least mass?

Least to greatest: 55.847; 58.70; 58.9332

Cobalt has the greatest mass; iron has the least mass.

200

A planet's solar illumination can be measured in units of mean illumination. When Saturn is closest to the Sun, its mean illumination is 0.012 units. When farthest from the Sun, Saturn's mean illumination is 0.0098 units.

Which number indicates a brighter illumination?

The number 0.012 indicates a brighter illumination.

300

Debra buys a present for three of her friends at the following prices: $31.89, $31.35, $31.05. Which is the least expensive gift? Which is the most expensive gift?

Least expensive: $31.05

Most expensive: $31.89

400

A weather channel reports the following temperature for the week ahead: -4.75^oC, -1.5^oC, 4.25^oC, -4.9^oC, -1.75^oC. Which is the highest temperature? Which is the lowest?

Highest temperature: 4.25^oC

Lowest temperature: -4.9^oC

500

Kayleigh buys a book for $18.97. George buys the same book plus another book for $10. George uses a $8 coupon when he pays. Which person had a more expensive total?

George has a more expensive total ($20.97).