Câu 1:
` a)` ` 1246+12.95 : 38-305 `
` =1246+1140 : 38-305 `
` =1246+30-305 `
` =1276-305 `
` =971 `
` b) ` ` [ 3924+2^3 . 3^2 .(2.10^2 + 4^3)]:63.12^0 `
` =[ 3924+8.9.(2.100+64)]:63.1 `
` =[ 3924+72.(200+64)]:63 `
` =[ 3924+72.264]:63 `
` =[ 3924+19008]:63 `
` =22932:63 `
` =364 `
Câu 2:
` 36.56+45.6^2 - 36 `
`=36.56+45.36-36`
`=36.(56+45-1)`
`=36.100`
`=3600`