Post on 29-Nov-2014
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Changing Fractions to
Decimals
Fraction In words Using “ out of “ Using “ ÷ ”
16 one sixth 1 out of 6 1÷ 6
Remember
Using your calculator
3?
8
3 ÷ 8 = 0.375
Using your calculator
7?
11
7 ÷ 11 = 0.63636363
Round your answer to 2 dp
= 0.64
Try These 11. Use your calculator to change these fractions to decimals:
a.
b.
c.
d.
16
34
1
5
4
8
5
Page 108
0.8
0.1875
0.25
0.625
Try These 2Write these fractions as decimals and round as indicated.
a. (to 3 dp)
b. (to the nearest hundredth.)
c. (to the nearest thousandth.)
d. (to the nearest thousandth.)
e. (to the nearest tenth.)
f. (to 2 dp)
Page 110
13
5
15
2
3
2
11
3
9
4
7
6
0.385
0.13
0.667
0.273
0.4
0.86
Fractional Part of a Number
4
7Find of 210
4
7 x 210
4 ÷ 7 x 210 = 120
Fractional Part of a Number
2
7Find of 100
2
7 x 100
2 ÷ 7 x 100 = 28.5714285= 28.57
Round your answer to 2 dp
a. Find of 80
b. Find of 60
c.Find of 30
d.Find of 60
Page 111
4
3
5
2
8
3
8
1
Try These 3
60
24
11.25
7.5
Try These 4
a. Find of 200 and round your answer to 2 d.p.
b. Find of 290 and round your answer to 2 d.p.
c. Find of 97 and round your answer to the
nearest tenth.
d. Find of 50 and round your answer to the
nearest hundredth
13
3
11
2
12
1
13
6
Page 113
46.15
52.73
8.1
23.08
Page 114 Exercise 3.3Use your calculator to change these fractions to decimals. Round your answer when indicated
a. b.
c. d. to 2 dp
e. to 2 dp f.
g. to 3 dp h. to 3 dp
3
8
3
5
1
4
8
13
5
7
13
40
5
69
11
0.375 0.6
0.25 0.62
0.71 0.325
0.833 0.818
Page 114 Exercise 3.3
9
16of 100
1
690of
3
16of 500
2
3213of
4
7357of
1
13175of
2
6of 186
4
15600of
7
18of 170
2
9250of
Calculate the following and round your answer to 2 dp.
56.25
93.75
204.00
62.00
66.11
15.00
142.00
13.46
160.00
55.56