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3 December, 18:48

Which strategy can be used to multiply 6 x 198 mentally?

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Answers (2)
  1. 3 December, 20:59
    0
    198 is the bigger number, so in order to multiply mentally, we multiply 6 to every number in 198.

    What I mean is:

    6 x 8 = 48

    4 is added to answer of 6 x 9.

    6 x 9 = 54 + 4 = 58

    5 is added to answer of 6 x 1.

    6 x 1 = 6 + 5 = 11.

    6 x 198 = 1188
  2. 3 December, 22:01
    0
    Start from the right side and say

    6 times 8 is 48 carry the four, 6 times 9 is 54 add your 4 you carried that gives you 58, carry your five and say 6 times one is 6 add your carried 5 and you get 1188
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