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Decimal Places

100

Round 45.6289 to 1 decimal place.

45.6

200

Round 0.0043632 to 3 decimal places.

0.004

300

Round 128.539 to 2 decimal places.

128.54

400

Round 3.141592 to 4 decimal places.

3.1416

500

A rope is 12.3499 m long. Round to 3 decimal places.

12.350

Significant Figures

100

Write 4547 to 2 significant figures.

4500

200

Write 0.004523 to 2 significant figures.

0.0045

300

Write 128,987 to 3 significant figures.

129,000

400

Round 0.00007892 to 3 significant figures.

0.0000789

500

A machine produces 98.756 kg of steel. Write this to 4 significant figures.

98.76 kg

Scientific Notation

100

Write 5,600 in scientific notation.

5.6×10³

200

Write 0.0043 in scientific notation.

4.3 x 10^-3

300

Convert 9,870,000 into scientific notation.

9.87 x 10⁶

400

Convert 0.000000912 into scientific notation.

9.12 x 10^-7

500

The distance to a star is 87,600,000,000 km. Write this in scientific notation.

8.76 x 10¹⁰