Grade 7Mathpractice16 questions

Percentage increase and decrease

Grade 7: increase by a percentage, decrease by a percentage, find a percentage of an amount, discounts and sales, one quantity as a percentage of another.

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Free to play. Teams answer on one screen; your phone is the remote. No student devices.

Questions

  1. Increase 200 by 10%. What is the result?

    • 20
    • 202
    • 210
    • 220
    Show answer220

  2. A plant is 40 cm tall and grows by 50%. How tall is it now?

    • 50 cm
    • 60 cm
    • 80 cm
    • 90 cm
    Show answer60 cm

  3. Increase 80 by 25%. What is the result?

    • 100
    • 105
    • 120
    • 85
    Show answer100

  4. Decrease 300 by 10%. What is the result?

    • 270
    • 290
    • 30
    • 330
    Show answer270

  5. A town has 2000 people. The number falls by 5%. How many people now?

    • 1800
    • 1900
    • 1950
    • 1990
    Show answer1900

  6. What is 15% of 60?

    • 12
    • 15
    • 6
    • 9
    Show answer9

  7. A book costs $20 and has 25% off. What is the sale price?

    • $15
    • $18
    • $25
    • $5
    Show answer$15

  8. A coat costs $80. The sale takes off 30%. How much do you pay?

    • $110
    • $24
    • $50
    • $56
    Show answer$56

  9. What is 12 as a percentage of 48?

    • 12%
    • 25%
    • 4%
    • 50%
    Show answer25%

  10. Mia scores 36 out of 45 in a test. What percentage is that?

    • 75%
    • 80%
    • 85%
    • 90%
    Show answer80%

  11. Increasing a number by 100% doubles it. (True or false?)

    Show answerTrue

  12. If you increase a price by 10% and then decrease it by 10%, you get the original price. (True or false?)

    Show answerFalse

  13. Decreasing an amount by 50% gives the same result as halving it. (True or false?)

    Show answerTrue

  14. A $150 bike is reduced by 20%. What is the sale price in dollars? (Answer out loud)

    Show answer$120

  15. A price rises from $50 to $60. What is the percentage increase? (Answer out loud)

    Show answer20%

  16. What is 5% of 400? (Answer out loud)

    Show answer20

Play it as a game

BowlingAnswer right to roll: pick a lane and knock the pins down. A star doubles the points!Hoop ShotAnswer right to shoot: close for 2, middle for 3, far for 5. The further, the harder.Penalty KickAnswer right to take a penalty: left or right for 2, the top corner for 3. Will the keeper save it?Fishing PondAnswer right to cast at a buoy: fish worth 1 to 3, the golden fish for 5, or a silly old boot!

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