Practice Maths

Topic Review — Percentages — Solutions

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  1. Converting between percentages, fractions and decimals

    1. 45%:
    2. 0.08 as a percentage:
    3. 7/8 as a percentage:
    4. 24 out of 40:
    5. 13 out of 52:
    6. Ascending order:

  2. Finding percentages of quantities

    1. 35% of 80:
    2. 12% of 350:
    3. 7.5% of 400:
    4. 20% of a number is 46:
    5. 125% of 64:
    6. 1% of $8 500:

  3. Percentage increase and decrease

    1. Increase $240 by 15%:
    2. Decrease 560 by 25%:
    3. $80 to $96 percentage increase:
    4. 250 to 185 percentage decrease:
    5. After 20% decrease, value is 160 — original:
    6. 8% increase gives $38 880 — original salary:

  4. Profit, loss, discount and GST

    1. Bike: bought $180, sold $225 — percentage profit:
    2. Tablet: cost $640, sold $512 — percentage loss:
    3. Jacket: 30% off $220 — sale price:
    4. GST (10%) on $340:
    5. Price including GST is $275 — pre-GST:
    6. 40% mark-up on $65:

  5. Mixed percentage problem solving

    1. Basketball team: 15 wins, 9 losses — win percentage:
    2. Shirt at $85, 30% off then 10% GST:
    3. $2500 at 4% for one year:
    4. Car depreciates 15% per year from $22 000:
    5. Sophia: 54/60 — did she pass (70%)?: