1994.5*79+0.24*790+244.9 ：

1994.5*79+0.24*790+244.9 ：

Original formula = 1994.2 * 79 + 2.4 * 79 + 3.1 * 79
=（1994.2+2.4+3.1）*79
=2000*79
=2000*80-2000
=160000-2000
=158000

2 / 1 and 1994 times 79 + 20 / 11 times 790 + 244.9

2 / 1 and 1994 times 79 + 20 / 11 times 790 + 244.9
=2 / 1 and 199.4 times 790 + 20 / 11 times 790 + 244.9
=790 (2 / 1 and 199.4 + 20 / 11) + 244.9

1 / 2 × 79 + 6 / 25 × 790 + 244.9 in 1994
It's 158000 in the end

(1994 1/2+5 1/2)*79+244.9
=2000*79+244.9
=158000+244.9
=158244.9

199412×79+790×625+244.9．

199412×79+790×625+244.9，=1994.5×79+790×0.24+244.9，=199.45×790+790×0.24+790×0.31，=199.45×790+790×0.24+790×0.31，=790×（199.45+0.24+0.31），=790×200，=158000；

1994 1 / 2 * 79 + 11 / 20 * 790 + 244.9
Better answer today

(1994 1/2+5 1/2)*79+244.9
=2000*79+244.9
=158000+244.9
=158244.9

We know that a times b equals 400, B is constant, a times 3, then what is the product? A is constant, B divided by 2, then what is the product?

1200 200

The quotient of a number not equal to 0 divided by 1 / 3 is larger or smaller than the product of this number multiplied by 1 / 3. Why

It depends on whether the number is positive or negative
Let this number be a, then the quotient of a divided by 1 / 3 is 3a, and the product of a multiplied by 1 / 3 is 1 / 3a;
If a is positive, 3A > 1 / 3a;
If a is negative, 3a

Dividing a number by 110 is ten times the number______ (judge right or wrong)

It is correct to divide a number by 110, which is equivalent to expanding the number by 10 times

A number divided by 1 / 4 is equal to four times the number. Is it wrong? What I filled in is wrong
It doesn't say except 0

Hello, Margo, I've moved out all the questions in the examination paper. I filled them in correctly

A number divided by one fifth is equal to five times the number?
reason

Incorrect
0 is a special case