计算下列各题.能简算的要简算. (1) (2)90.5×99+90.5 (3) (4)
计算下列各题,能简算的要简算。 | ||||
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(1)![]() = ![]() ![]() =7+1 =8 | (2)90.5×99+90.5 =90.5×100 =9050 |
(3)![]() =120÷(45× ![]() =120÷5 =24 | (4)![]() =12× ![]() ![]() ![]() =4+6-3 =7 |


计算下列各题,能简算的要简算。 | ||||
|
(1)![]() = ![]() ![]() =7+1 =8 | (2)90.5×99+90.5 =90.5×100 =9050 |
(3)![]() =120÷(45× ![]() =120÷5 =24 | (4)![]() =12× ![]() ![]() ![]() =4+6-3 =7 |