F3 mathematics chp2

Round off the number of significant figures.

38045 (2s.f.)

• 38000

• 38

• 39000

• 380

Round off the number of significant figures.

11564 (3s.f.)

• 11500

• 11600

• 116

• 115

Choose the number is round off the number of 4 significant figures.

• 500

• 0.0516

• 0.112

• 3007

Calculate each of the following operations. State the answers correct to the number of significant figures stated in the brackets.

1.91 - 0.23 x 2 [2]

• 1.45

• 1.5

• 1.4

• 1.3

Write the following numbers in standard form.

0.126

Write the following numbers in standard form.

1400 000

• 50

• 0.5

• 50.6

• 0.506

• 9300 000

• 0.000093

• 0.0093

• 930 000