Adding decimals
subtracting
decimals
multiplying decimals
dividing decimals
Rules for decimals
100

27.3 + 13.265

40.565

100

19.5 - 11.76

7.74

100

2.1 X 4.6

9.66

100

2.5 divided by .5

3

100

What do you do with decimals when adding?

line them up

200

192.467 + 25.967

218.434

200

23.22- 3.345

18.875

200

2.56 X 19

48.64

200

35.6 divided by 23.6

59.2

200

what to do with the decimals when subtracting?

line them up

300

13.65 + 19.365

33.015

300

23.25 - 1.25

22

300

33.375 X 19.56

652.815

300

33.34 divided by 34.67

68.01

300

When multiplying decimals what happens to the decimals?

You move over based on how many decimal spaces there are.

400

14.25 + 19.2 +33.3

66.75

400

198.567 - 65.765

132.802

400

456.789 X 98.2

44856.6798

400

19.345 divided by 19.543

38.888

400

What do we do with the decimals when dividing?

You have to create a whole number on the outside, and move that many spaces on the inside

500

258.975 + 92.87

351.845

500

543.21 - 123.45

419.76

500

456.76 X 19.2

8769.792

500

275.25 divided by 19.2

294.45

500

What happens when you do not have your homework?

How many kids does Mrs. Monroe have?

What is one thing Mrs. Monroe is always saying?

zero

6

Be quiet!

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