Grade 4 - Progress in Mathematics

Order Decimals

13-5

Championship Times

Speed Skating, 500 Meters

Sarah Hill 40.1 seconds

Patty Carter 40.3 seconds

Mei Wong 38.03 seconds

Ta n y a Odetta 36.33 seconds

0 0.5 1.0

0 0.50

0.65

0.6

1.0

0.4

0.78

Order the finishing times

from fastest to slowest.

Yo u can use place value

to order decimals

from least to greatest.

Align by Compare Compare Compare tenths.

place tens. ones. Rearrange

value. Rearrange. Rearrange. if necessary.

40.1 3 8.03 36 .33 least 36.33

40.3 3 6.33 38 .03 38.03

38.03 4 0.1 40 .1 40. 1

36.33 4 0.3 40 .3 40. 3 greatest

30 
 40 6 
 8 0. 1 
0. 3

0  0

The order from fastest to slowest: 36.33; 38.03; 40.1; 40.3

or

The order from slowest to fastest: 40.3; 40.1; 38.03; 36.33

Yo u can use a number line to order decimals.

Order from least to greatest: 0.6; 0.4; 0.78; 0.65

The order from least to greatest: 0.4; 0.6; 0.65; 0.78

or

The order from greatest to least: 0.78; 0.65; 0.6; 0.4

1.2

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