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This astonishing method for multiplying numbers is

so easy because it works from left to right

Suppose you want to know the cost of 6 hinges at 73 cents each.

**73 × 6 = 438**

We first multiply the 7 by 6 to get 42.

We then multiply the 3 by 6 to get 18.**4 2**_{1}8 = 4 3 8

The 1 in the 18 is mentally carried back to the 42

to make it 43.

So any double figure number after the first involves

carrying the first figure to the left and adding it on.

- Similarly
**234 × 7 = 1638**

We get 2×7=14 then 3×7=21

and**14**_{2}1 = 161

Next we have 4×7=28, so**161**_{2}8 = 1638

**282 × 4 = 1128**

As**8**and_{3}2 = 112**112 8 = 1128**

- And
**43 × 7 = 28**(28 becomes 30)_{2}1 = 301

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In The DIY Shop

Mathematics is the

Queen of the Sciences

and Arithmetic the

Queen of Mathematics

Queen of the Sciences

and Arithmetic the

Queen of Mathematics

GAUSS