Easy way to teach percentage increase (from Summer Institute)

Increase £3200 by 23%

100% – £3200

10% – £320

1% – £32

10% – £320                       1% – £32

10% – £320                       1% – £32

20% – £640                      1% – £32

.                                          3% – £96

So total increase:

£640

£96

£736

So new total:

£3200

£736

£3936

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