• Sludgeyy@lemmy.world
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    1 year ago

    1% of 33 is .33

    .33 × 7 =

    .3 x 7 = 2.1

    .03 x 7 = .21

    21 + 2.1 = 2.31

    So

    7% of 33 = 2.31

    You could also do

    33% of 7

    10% of 7 is .7

    1% of 7 is .07

    So 11% is .77

    .77 × 3 =

    .7 × 3 = 2.1

    .07 × 3 = .21

    2.1 + .21 = 2.31