10-5-1 Percent
Increase or Decrease
Math Tricks
Fraction to Percent
Challenge Round
100

10% of 50

What is 5?

100

Increase 40 by 10%

What is 44?


100

48 + 52

What is 100?

100

1/10 of 90

What is 9?

100

18% of 100

What is 18?

200

10% of 120

What is 12?

200

Decrease 80 by 10%

What is 72?

200

99 + 37

What is 136?

200

1/4 of 80

What is 20?

200

12% of 50

What is 6?

300

5% of 200

What is 10?

300

Increase 60 by 25%

What is 75?

300

125 − 20 + 1

What is 106?

300

1/2 of 64

What is 32?

300

What number is 30% of 200?


What is 60?

400

1% of 300

What is 3?

400

Decrease 120 by 50%

What is 60?

400

250 + 49

What is 299?

400

25% of 200

What is 50?

400

Increase 75 by 12%

What is 84?

500

15% of 110

What is 16.5?

500

Increase 200 by 5%

What is 210?
500

500 − 125

What is 375?

500

50% of 150

What is 75?

500

Decrease 90 by 25%


What is 67.5?