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Exercise 11.1 Using mental methods
30% of a sum of money is $234.
Use this fact to work out:
a 60%=468
b 90%=702
c 15%
d 3% 23-4
of the same amount.
= a Describe how to find 35% of a number, without using a calculator.
b Find 35% of:
i 44 kg
ii 280 m
iii $88.
Work out:

Sagot :

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