Solve 0.03 ÷ 0.002.

Correct answer: 15. Multiply the top and bottom by 1000: 0.03 ÷ 0.002 = 30 ÷ 2 = 15.

Background: Making both numbers whole removes the decimals.

• 9: 9 does not result from this division.
• 1.5: 1.5 comes from moving the decimal point the wrong number of places.
• 0.6: 0.6 does not result from this division.

Did you know? Dividing decimals: move the decimal point the same number of places in both.

Memory trick: Move 3 places: 30 ÷ 2 = 15.