Decimals Worksheet - Unit 3 Page 25
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38When a quotient is a measurement, we give the answer
in a form that makes sense.
Since the volume of water was given to a hundredth of a litre,
we write the quotient to the closest hundredth.
2.3625 is closer to 2.36 than to 2.37,
2.3625
so write the quotient as 2.36.
2.36
2.37
Each hiker got about 2.36 L of water.
Check the answer by multiplying the quotient
by the divisor.
2.36
4
9.44
9.44 is close to the dividend, 9.45.
So, the answer is reasonable.
® One morning, the hikers travelled 10.4 km in 3 h.
About how far did the hikers travel in 1 h?
Divide: 10.4
3
Divide as whole numbers. Use short division.
Write zeros in the dividend.
3 4 6 6 6
Sometimes you may never
3 10
4
0
0
0
1
2
2
2
2
stop dividing, no matter how
many zeros you write in the
dividend.
Estimate to place the decimal point.
The closest whole-number benchmark to 10.4 is 10.
10
3 is a little more than 3.
So, place the decimal point between the 3 and the 4;
that is: 3.4666 …
The dots indicate that
the decimal places
So, 10.4
3
3.4666 …
This quotient is
go on forever.
approximate .
Since the distance was given to a tenth of a kilometre,
we write the quotient to the closest tenth.
3.4666 … is closer to 3.5 than to 3.4,
3.4666 ...
so, write the quotient as 3.5.
3.45
3.4
3.5
The hikers travelled about 3.5 km in 1 h.
Check the answer by multiplying the quotient by the divisor.
3.5
3
10.5
10.5 is close to the dividend, 10.4.
So, the answer is reasonable.
110
Unit 3 Lesson 6
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