1. Percentage
Practice
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2. Calculating Percentages Mentally
What is 10% of 80? 8
What is 20% of 30? 3
x 2 = 6
What is 30% of 40? 4
x 3 = 12
What is 40% of 50? 5
x 4 = 20
What is 50% of 36? 36
÷ 2 = 18
What is 60% of 70? 7
x 6 = 42
What is 70% of 30 3
x 7 = 21
What is 80% of 60? 6
x 8 = 48
What is 90% of 200? 20
x 9 =
180
What is 20% of 35?
3.5
x 2 = 7
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3. Calculating Percentages Mentally
What is 10% of 110? 11
What is 20% of 150? 15
x 2 = 30
What is 30% of 120? 12
x 3 = 36
What is 40% of 90? 9
x 4 = 36
What is 50% of 50? 50
÷ 2 = 25
What is 60% of 30? 3
x 6 = 18
What is 70% of 40 4
x 7 = 28
What is 80% of 90? 9
x 8 = 72
What is 90% of 300? 30
x 9 =
270
What is 20% of 45?
4.5
x 2 = 9
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4. Calculating Percentages Mentally
What is 10% of 60? 6
What is 15% of 80? 8
+4= 12
What is 35% of 60? 6
+6+6
+3= 21
What is 45% of 120? 12
+6= 54
What is 25% of 300? 30
+30
+15= 75
What is 65% of 200? 20
x 6
+10=
130
What is 40% of 125?
12.5 = 50
What is 16% of 300? 30
+15
+3= 48
What is 12% of 200? 20
+2+2= 24
What is 16% of 50? 5
+2.5
+0.5= 8
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5. Calculating Percentages Mentally
What is 10% of 90? 9
What is 15% of 60? 6
+3= 9
What is 35% of 80? 8
+8+8
+4= 28
What is 45% of 40? 4
+4+4+4
+2= 18
What is 25% of 200? 20
+20
+10= 50
What is 65% of 300? 30
x 6
+15=
195
What is 20% of 125?
12.5
+12.5= 25
What is 16% of 400? 40
+20
+4= 64
What is 12% of 150? 15 = 18
What is 16% of 250? 25
+12.5
+2.5= 40
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6. Test on
Percentages
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7. Test on Calculating Percentages Mentally
What is 10% of 80? 8
What is 20% of 30? 3
x 2 = 6
What is 30% of 40? 4
x 3 = 12
What is 40% of 50? 5
x 4 = 20
What is 50% of 36? 36
÷ 2 = 18
What is 60% of 70? 7
x 6 = 42
What is 70% of 30 3
x 7 = 21
What is 80% of 60? 6
x 8 = 48
What is 90% of 200? 20
x 9 =
180
What is 20% of 35?
3.5
x 2 = 7
© T Madas

8. Test on Calculating Percentages Mentally
What is 10% of 110? 11
What is 20% of 150? 15
x 2 = 30
What is 30% of 120? 12
x 3 = 36
What is 40% of 90? 9
x 4 = 36
What is 50% of 50? 50
÷ 2 = 25
What is 60% of 30? 3
x 6 = 18
What is 70% of 40 4
x 7 = 28
What is 80% of 90? 9
x 8 = 72
What is 90% of 300? 30
x 9 =
270
What is 20% of 45?
4.5
x 2 = 9
© T Madas

9. Test on Calculating Percentages Mentally
What is 10% of 60? 6
What is 15% of 80? 8
+4= 12
What is 35% of 60? 6
+6+6
+3= 21
What is 45% of 120? 12
+6= 54
What is 25% of 300? 30
+30
+15= 75
What is 65% of 200? 20
x 6
+10=
130
What is 40% of 125?
12.5 = 50
What is 16% of 300? 30
+15
+3= 48
What is 12% of 200? 20
+2+2= 24
What is 16% of 50? 5
+2.5
+0.5= 8
© T Madas

10. Test on Calculating Percentages Mentally
What is 10% of 90? 9
What is 15% of 60? 6
+3= 9
What is 35% of 80? 8
+8+8
+4= 28
What is 45% of 40? 4
+4+4+4
+2= 18
What is 25% of 200? 20
+20
+10= 50
What is 65% of 300? 30
x 6
+15=
195
What is 20% of 125?
12.5
+12.5= 25
What is 16% of 400? 40
+20
+4= 64
What is 12% of 150? 15 = 18
What is 16% of 250? 25
+12.5
+2.5= 40
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11. © T Madas