1. Converting a Fraction to %
STANDARD 1.3
Converting a Fraction to %
Problem 1
Problem 2
Problems 3
Problem 4
Problem 5
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2. GRADE 7: Number Sense
1.3 Convert fractions to decimals and percents and use these representations in estimations, computations and applications.
1.3 Convertir fracciones a decimales y porcentajes y usar estas representaciones en estimaciones, cálculos y aplicaciones.
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3. 9 8 7 6 5 4 3 2 1 10 1 10 10
100 =
10%
=0.1
=0.10
STANDARD 1.3
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4. 9 8 7 6 5 4 3 2 1 10 19 18 17 16 15 14 13 12 11 20 1 5 2 10 = 20
100 =
20%
=0.2
=0.20
STANDARD 1.3
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5. 29 28 27 26 25 24 23 22 21 30 39 38 37 36 35 34 33 32 31 40 9 8 7 6 5 4 3 2 1 10 19 18 17 16 15 14 13 12 11 20 2 5 4 10 = 40
100 =
40%
=0.4
=0.40
STANDARD 1.3
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6. 29 28 27 26 25 24 23 22 21 30 39 38 37 36 35 34 33 32 31 40 9 8 7 6 5 4 3 2 1 10 19 18 17 16 15 14 13 12 11 20 49 48 47 46 45 44 43 42 41 50 59 58 57 56 55 54 53 52 51 60 3 5 6 10 = 60
100 =
60%
=0.6
=0.60
STANDARD 1.3
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7. 4 5 8 10 = 80
100 =
80%
=0.8
=0.80
STANDARD 1.3
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8. 80% Find 80% of 60: Remember: 8 10 = 80 100 4 5 =0.8 =0.80 If x 60 .8
Decimal places
Decimal places in the result. 1 48 1
then 80 hundredths of 60 are: 80
100 60
= 0.8 x 60
= 48
48 is 80% of 60
STANDARD 1.3
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9. 20% Find 20% of 95: Remember: = 100 =0.2 =0.20 If x 95 .28 7 6 5 4 3 2 1 10 19 18 17 16 15 14 13 12 11 20 =
100
=0.2
20%
=0.20 If x 95 .2
Decimal places
Decimal places in the result. 1 19 1
Then 20 hundredths of 95 are: 20
100 95
= 0.2 x 95
= 19
19 is 20% of 95
STANDARD 1.3
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10. 40% Find 40% of 15: Remember: 4 10 = 40 100 2 5 =0.4 =0.40 If x 15 .429 28 27 26 25 24 23 22 21 30 39 38 37 36 35 34 33 32 31 9 8 7 6 3 1 19 18 17 16 15 14 13 12 11 20 If x 15 .4
Decimal places
Decimal places in the result. 1 6 1
Then 40 hundredths of 15 are: 40
100 15
= 0.4 x 15
= 6
6 is 40% of 15
STANDARD 1.3
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11. 60% Find 60% of 81: Remember: 6 10 = 60 100 3 5 =0.6 =0.60 If x 81 .629 28 27 26 25 24 23 22 21 30 39 38 37 36 35 34 33 32 31 40 9 8 7 4 2 1 19 18 17 16 15 14 13 12 11 20 49 48 47 46 45 44 43 42 41 50 59 58 57 56 55 54 53 52 51 If x 81 .6
Decimal places
Decimal places in the result. 1 48 6 1
Then 60 hundredths of 81 are: 60
100 81
= 0.6 x 81
= 48.6
48.6 is 60% of 81
STANDARD 1.3
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12. Find 35% of 12:
Find 47% of 23: 35
100 47
100 12
= 0.35 x 12 23
= 0.47 x 23
= 4.2
= 10.81
4.2 is 35% of 12
10.81 is 47% of 23
Find 15% of 4: 15
100 4
= 0.15 x 4
= 0.6
0.6 is 15% of 4
STANDARD 1.3
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