Precision COURSE 2 LESSON 4-9 What is the greatest precision possible with a digital clock that shows the hour and minute? The clock shows both hours and minutes. Measurements are precise to the nearest minute. 4-9

Precision Choose the more precise measurement: 3.6 cm or 9.15 cm. COURSE 2 LESSON 4-9 Choose the more precise measurement: 3.6 cm or 9.15 cm. Since hundredths of a centimeter are smaller than tenths of a centimeter, 9.15 cm is more precise. 4-9

Precision COURSE 2 LESSON 4-9 Find the difference: 7 mi – 2 mi. Round your answer to match the less precise measurement. 3 4 7 mi – 2 mi 3 4 7 – 2 = 4 3 4 1 Since 7 is less precise than 2 , round to the nearest whole number. The difference is 4 mi. 3 4 4-9

Precision Choose the more precise measurement. COURSE 2 LESSON 4-9 Choose the more precise measurement. 1. 12 in., 10 in. 2. 7.78 kg, 7.8 kg Find each sum or difference. Round the answer to match the less precise measurement. 3. 3.09 L + 4.7 L 4. 81.2 cm – 46.08 cm 3 4 10 in. 3 4 7.78 kg 7.8 L 35.1 cm 4-9