Percentage Increase and Decrease Trick Worksheet
The fast method (One-step multiplier): Increase by p%: multiply by (100 + p)% — up 20% is × 1.2. Decrease by p%: multiply by (100 − p)% — down 25% is × 0.75. Easy way to multiply: × the whole number (115 or 75), then ÷ 100.
NameDateTime takenScore ___ / 40
- 1.655 increased by 60% =
- 2.620 decreased by 25% =
- 3.175 decreased by 8% =
- 4.205 decreased by 40% =
- 5.548 decreased by 50% =
- 6.440 decreased by 30% =
- 7.535 decreased by 60% =
- 8.690 increased by 30% =
- 9.570 increased by 10% =
- 10.150 increased by 30% =
- 11.216 increased by 75% =
- 12.175 decreased by 12% =
- 13.184 decreased by 75% =
- 14.640 increased by 75% =
- 15.590 decreased by 50% =
- 16.320 decreased by 35% =
- 17.110 increased by 60% =
- 18.40 decreased by 25% =
- 19.360 increased by 35% =
- 20.275 decreased by 12% =
- 21.80 increased by 25% =
- 22.100 decreased by 60% =
- 23.140 decreased by 15% =
- 24.240 decreased by 35% =
- 25.145 increased by 40% =
- 26.800 decreased by 5% =
- 27.780 increased by 50% =
- 28.620 increased by 15% =
- 29.125 increased by 12% =
- 30.140 increased by 5% =
- 31.420 increased by 35% =
- 32.500 increased by 35% =
- 33.656 increased by 75% =
- 34.380 increased by 5% =
- 35.575 decreased by 12% =
- 36.575 increased by 12% =
- 37.112 increased by 25% =
- 38.795 decreased by 60% =
- 39.232 decreased by 75% =
- 40.180 decreased by 35% =
Answer key
- 1048
- 465
- 161
- 123
- 274
- 308
- 214
- 897
- 627
- 195
- 378
- 154
- 46
- 1120
- 295
- 208
- 176
- 30
- 486
- 242
- 100
- 40
- 119
- 156
- 203
- 760
- 1170
- 713
- 140
- 147
- 567
- 675
- 1148
- 399
- 506
- 644
- 140
- 318
- 58
- 117
Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths