7/21/2019 ws228

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Adding and subtracting

decimal numbers

Adding and subtracting decimal numbersWhen adding and subtracting decimal numbers you must remember to keep all the decimal points aligned

under one another.

Calculate each of the following:(a) 6.8 + 2.24 (b) 17 9.4

(a)

+

6.80

2.24

9.04

(b)

17.10

19.4

7.6

1 Calculate each of the following.

(a) 6.31 + 7.14 (b) .!3 " 6

+

6

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.

.

31

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(c) 14.! + 6.$7 (d) %.! " 6.3&

+

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.

.

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.

.

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(e) 17.34 " $.43 (f) 61 + $.%6

"

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.

.

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.

.

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Copyright ear!on "a #i$i!ion of ear!on %u!tralia &roup ty 't#( )ath! *or!heet ,earcher

ut in a -ero to alance the colu/n!

Note:the point! are aligne# un#er one another

*hole nu/er 17 17.0

%gain put in -ero! to alance colu/n!

7/21/2019 ws228

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Adding and subtracting

decimal numbers

Answers1 (a)13.4&(b)!.!3 (c)!$.!7(d)!.&(e)16.%1(f)61.%6

Copyright ear!on "a #i$i!ion of ear!on %u!tralia &roup ty 't#( )ath! *or!heet ,earcher