Finding n% of a quantity and increasing or decreasing by n% Flashcards
To practise calculator methods for this topic.
What single calculation could you type into a calculator
to find 35% of 60 pupils?
60 x 0.35
or
60 ÷ 100 x 35
or
35 ÷ 100 x 60
What single calculation could you type into a calculator
to find 28.5% of 800 grams?
800 x 0.285
or
800 ÷ 100 x 28.5
or
28.5 ÷ 100 x 800
What single calculation could you type into a calculator
to find 7% of £240?
240 x 0.07
or
240 ÷ 100 x 7
or
7 ÷ 100 x 240
What single calculation could you type into a calculator
to find 72% of 440 pupils?
440 x 0.72
or
440 ÷ 100 x 72
or
72 ÷ 100 x 440
What single calculation could you type into a calculator
to find 4.5% of 360 grams?
360 x 0.045
or
360 ÷ 100 x 4.5
or
4.5 ÷ 100 x 360
What single calculation could you type into a calculator
to find 27% of £160?
160 x 0.27
or
160 ÷ 100 x 27
or
27 ÷ 100 x 160
What single calculation could you type into a calculator
to increase £520 by 14%?
520 x 1.14 (100 + 14 = 114%)
or
520 ÷ 100 x 114
or
114 ÷ 100 x 520
What single calculation could you type into a calculator
to increase 90 kg by 26%?
90 x 1.26 (100 + 26 = 126%)
or
90 ÷ 100 x 126
or
126 ÷ 100 x 90
What single calculation could you type into a calculator
to increase 750 pupils by 8%?
750 x 1.08 (100 + 8 = 108%)
or
750 ÷ 100 x 108
or
108 ÷ 100 x 750
What single calculation could you type into a calculator
to decrease 450 pupils by 12%?
450 x 0.88 (100 - 12 = 88%)
or
450 ÷ 100 x 88
or
88 ÷ 100 x 450
What single calculation could you type into a calculator
to decrease £85 pupils by 8%?
85 x 0.92 (100 - 8 = 92%)
or
85 ÷ 100 x 92
or
92 ÷ 100 x 85
What single calculation could you type into a calculator
to decrease 250 grams by 35%?
250 x 0.65 (100 - 35 = 65%)
or
250 ÷ 100 x 65
or
65 ÷ 100 x 250
