Workbook 4B - Singapore Math

Exercise 1
1. Write each fraction as a decimal.
(a)
2 tenths
2
=
10
5
=
10
8
=
10
9
=
10
(b)
5 tenths
(c)
8 tenths
(d)
9 tenths
Unit 6: Decimals
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7
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2. What is the amount of water in liters?
Give the answer as a decimal.
(a) (b)
1L
1L
L
L
3. What is the mass in kilograms?
Give the answer as a decimal.
(a) 8
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(b)
kg
kg
Unit 6: Decimals
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Exercise 5
1. Write each fraction as a decimal.
(a) (b)
7 hundredths
1 whole 7 hundredths
7
=
100
1 7 =
100
(c) (d)
58 hundredths
2 wholes 58 hundredths
58
=
100
2 24
(f) 1 (e)
=
100
(g)
(i)
(k)
22
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58
=
100
24
=
100
65
=
100
(h) 3 65
=
100
3
=
100
( j) 2 5
=
100
(l) 10 =
100
3
=
100
5
Unit 6: Decimals
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EXERCISE 1
1. Add.
(a)
3 tenths + 5 tenths =
tenths
0.3 + 0.5 =
(b)
8 tenths + 4 tenths =
tenths
0.8 + 0.4 =
(c)
5 tenths + 2 tenths =
tenths
0.5 + 0.2 =
(d)
7 tenths + 3 tenths =
tenths
0.7 + 0.3 =
(e)
4 tenths + 9 tenths =
tenths
0.4 + 0.9 =
(f)
6 tenths + 8 tenths =
tenths
0.6 + 0.8 =
(g)
(h)
(i)
46
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0.2 + 0.4 =
0.9 + 0.1 =
0.5 + 0.9 =
Unit 7: The Four Operations of Decimals
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REVIEW 7
1. Write the answer for each of the following as a decimal
or a whole number.
(a) 4 tenths + 9 tenths
(b) 7 tenths + 3 tenths
(c) 4 hundredths + 6 hundredths
(d) 12 tenths − 9 tenths
(e) 9 tenths 10 hundredths − 8 hundredths
(f) 20 hundredths × 8
(g) 72 hundredths ÷ 9
2. Find the value of each of the following.
(a) 10.5 − 6.07
(b) 4.8 × 5
(c) 54.86 + 2.9
(d) 0.3 − 0.03
(e) 60.45 ÷ 3
(f) 35.25 × 8
(g) 2.2 ÷ 4
84
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Review 7
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