0.35 x 20 = 7
0.35
x 20
------
7.00
First, multiply 35 by 0, the product is---------0.
Then, multiply 35 by 2, the product is------70.
============================
Putting 0 and 70 together, we get--------------700.
0.35 has two decimal places to the left so put the decimal place of 700 two places to the left too and we get 7.
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450 x 0.2 = 90
NO!!! The decimal point is the critical factor. 035 = 35 ( The zero is trvial) . .035 = 0.035 = 35/1000 = 7/200 Notice 35 does NOT equal 7/200 . This is becaiuse of the critical position of the decimal point.
To find the number that 45 is 20% of, you can set up a proportion. Let x be the unknown number. The proportion would be: 45/x = 20/100. Cross multiply to solve for x: 45 * 100 = 20x. Simplify the equation to find x: 4500 = 20x. Divide both sides by 20 to solve for x: x = 225. Therefore, 45 is 20% of 225.
The answer is 200. Here is how to work it out. 85% is 0.85 20% is 0.2 85% of 20% means 0.85 * 0.2 = 0.17 (I use * to mean multiply) So we need to find x in the following equation: 0.17 x = 34 ==> x = 34 ÷ 0.17 = 200
Working out 20 percent of 250 is the same as working out 250 x 0.2, or one fifth of 250, which is equal to 50.