Question

Tính nhanh 456: 2 x 18 + 456: 3 - 102

Answer 1

`@` `\text {Ans}`

`\downarrow`

`456 \div2\times18 + 456\div3 - 102`

`= 456\times0,5\times18 + 456\times1/3 - 102`

`= 456\times (0,5 \times 18 + 1/3) - 102`

`= 456 \times(9 + 1/3) - 102`

`= 456 \times28/3 - 102`

`= 4256 - 102`

`= 4154`

Answer 2

=456*9+456:3-102

=4104+152-102

=4104+40

=4144