High Interest

A Maths Starter of The Day

10% of £3.20 =
20% of £3.20 =
30% of £3.20 =
40% of £3.20 =
50% of £3.20 =
60% of £3.20 =
70% of £3.20 =
80% of £3.20 =
90% of £3.20 =
100% of £3.20 =

10% of £3.20 =
5% of £3.20 =
2.5% of £3.20 =
1.25% of £3.20 =
0.625% of £3.20 =

No Calculator

Work out the answers to these calculations in your head or on paper.
There are many uses for percentages in real life. Finding a good personal loan for example requires an ability to calculate percentages. Interest is the extra amount you would have to pay back to the personal loan company for borrowing the money. On the other hand you can earn interest by depositing money in a bank or building society. Compound interest is a topic you will learn about at school.

 

 

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Topics: Starter | Mental Methods | Money | Percentages

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    This activity is suitable for students of mathematics all around the world. Use the button below to change the currency symbol used to make it more relevant to your students. You may wish to choose an unfamiliar currency to extend your students' experience.

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    ANSWERS

    10% of £3.20 = £0.32 or 32p
    20% of £3.20 = £0.64
    30% of £3.20 = £0.96
    40% of £3.20 = £1.28
    50% of £3.20 = £1.60
    60% of £3.20 = £1.92
    70% of £3.20 = £2.24
    80% of £3.20 = £2.56
    90% of £3.20 = £2.88
    100% of £3.20 =£3.20    		 10% of £3.20 = £0.32 or 32p
    5% of £3.20 = 16p
    2.5% of £3.20 = 8p
    1.25% of £3.20 = 4p
    0.625% of £3.20 = 2p

    Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.

    More practice needed? Try "Quick Percentages"

    www.transum.org/go/?to=percent