Rounding Decimals
Significant Figures 1
Estimation
Rounding with Significant Figures
100

15.08554 rounded to the nearest thousandth

15.086

100

How many significant figures is 53

2

100

Estimate 2.3 x 4.9

10

100

445.1994 rounded to 1 significant figure

400

200

37.0001 rounded to the nearest tenth

37.0

200

How many significant figures is 860

3

200

Estimate 24 x 34

600

200

385.3229 rounded to two significant figures

390

300

944.098352 to the nearest ten thousandth

944.0984

300

How many significant figures is 5.9?

2

300

Estimate 39.009 X 49.1 / 89

20

300

502.04349 rounded to 4 significant figures

502.0

400

Round 992.9999987  to 3 decimal places

993.000

400

How many significant figures is 9.005

4

400

Estimate (14.9 x 21.9) / (12.8 x 1.9)

10

400

3.008658 rounded to 3 significant figures

3.01

500

Round 0.0000000001 to one decimal place

0.0

500

How many significant figures is 0.00876?

3

500

(45+62)/33+76

1

500

0.00019 rounded to 1 significant figure

0

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