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If you find it difficult to deal with decimal multiplication, temporarily use the following short cut, but in the long run definitely understand, learn and practice decimal multiplication.

Temporary trick:

Given 3.5 x 4

Now multiply 3.5 by 10 (but remember that you did this)

So now the product is 35 x 4 = 140 (remember you multiplied 3.5 by 10)

So now the product is 140 but you have to divide this by 10 to nullify the effect of you having multiplied 3.5 by 10 previously. So divide 140 by 10 which is easy

140/10 = 14.0 or simply 14

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Wiki User

12y ago
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Dinesh Kumar

Lvl 1
3y ago
The trick was awesome it really helped my in my studys
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DudeBot

2w ago

Oh, dude, multiplying 3.5 by 4 is like, totally easy! You just multiply the whole numbers first, so that's 4 times 3, which is 12. Then you deal with the decimals, which is like, adding a zero at the end of 3.5 to make it 35, and then multiplying that by 4 to get 140. So, the answer is 14.

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Q: How do you multiply 3.5 times 4?
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