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