Transcript Document

Fraction decimal switch
Decimals and fractions are just different ways of showing the same value. A
half can be written as a fraction ½ or as a decimal 0.5.
Fractions where the denominator (the bottom number) is a power of ten can easily be shown
as decimals.
7/10 written as a decimal is 0.7
34/100 written as a decimal is 0.34
Take a look at the following fractions and decimals and try to match them to their
equivalents.
Move on
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1
Which decimal is the same as 3/10?
Click on the equivalent decimal.
0.03
0.3
3
10
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3.0
0.3
=
Move on
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2
Sorry you’re wrong
Try again
HINT:
1/10 is 0.1 as a decimal, 1/100 is 0.01 as a decimal and 1/1000 is 0.001
Try again
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3
Which decimal is the same as 75/100?
Click on the equivalent decimal.
7.5
0.75
75
100
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=
0.075
0.75
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Move on
4
Sorry you’re wrong
Try again
HINT:
1/10 is 0.1 as a decimal, 1/100 is 0.01 as a decimal and 1/1000 is 0.001
Try again
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5
Which fraction is the same as 0.09?
Click on the fraction.
9/10
1/9
0.09
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9/100
9/100
=
22858
Move on
6
Sorry you’re wrong
Try again
HINT:
1/10 is 0.1 as a decimal, 1/100 is 0.01 as a decimal and 1/1000 is 0.001
Try again
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22858
7
Which fraction is the same as 0.045?
Click on the fraction.
45/100
0.045
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45/1000
=
1/45
45/1000
Move on
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8
Sorry you’re wrong
Try again
HINT:
1/10 is 0.1 as a decimal, 1/100 is 0.01 as a decimal and 1/1000 is 0.001
Try again
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Fraction decimal switch – getting trickier!
Remember when changing decimals to
fractions
0.4 is the same as 4/10
BUT
You may need to show the fraction in its
simplest form, so find a number that
divides into the numerator and the
denominator.
2 divides into 4 twice and into 10 five
times so
4/10 becomes 2/5!
or when changing fractions to decimals
when the denominator is not a power of
ten.
Take 4/5 for example. You need to
‘change’ the denominator to a power of
ten. 5 times by 2 gives 10 but now you
need to do the same to the numerator so
4 times 2 gives 8. 4/5 is the same as 8/10
which is 0.8 as a decimal, phew!!!
Move on
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10
Which decimal is the same as 13/50?
Click on the decimal.
0.13
13/50
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0.26
0.26
=
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0.5
Move on
11
Sorry you’re wrong
Try again
HINT:
1/10 is 0.1 as a decimal, 1/100 is 0.01 as a decimal and 1/1000 is 0.001
Try again
© www.teachitprimary.co.uk 2014
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12
Which fraction is the same as 0.25?
Click on the fraction.
1/5
1/25
0.25
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1/4
=
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1/4
Move on
13
Sorry you’re wrong
Try again
HINT:
1/10 is 0.1 as a decimal, 1/100 is 0.01 as a decimal and 1/1000 is 0.001
Try again
© www.teachitprimary.co.uk 2014
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14
Which decimal is the same as 8/20?
Click on the decimal.
0.4
0.8
8/20
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0.4
=
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0.04
Move on
15
Sorry you’re wrong
Try again
HINT:
1/10 is 0.1 as a decimal, 1/100 is 0.01 as a decimal and 1/1000 is 0.001
Try again
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16
Which fraction is the same as 0.85?
Click on the fraction.
1/85
17/50
0.85
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17/20
17/20
=
22858
Move on
17
Sorry you’re wrong
Try again
HINT:
1/10 is 0.1 as a decimal, 1/100 is 0.01 as a decimal and 1/1000 is 0.001
Try again
© www.teachitprimary.co.uk 2014
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18
Which decimal is the same as 15/30?
Click on the decimal.
0.5
15/30
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0.15
0.5
=
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0.3
Move on
19
Sorry you’re wrong
Try again
HINT:
1/10 is 0.1 as a decimal, 1/100 is 0.01 as a decimal and 1/1000 is 0.001
Try again
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Now have a go on your own and see if you are a
bronze, silver or gold
fraction decimal switcher!
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