1.25×32 0.56+3.48+0.44+6.52 2.8×(2.25+28.5÷1.5)5.8×7.6+7.6×4.2 145.3﹣58.6﹣41.4 [(5.1﹣3.6)÷0.8﹣1]×0.09.
直接写出得数 (1)2.64+3.6= (2)2.4×50= (3)4﹣4= (4)= (5)= (6)0.3÷3%=
9.
.
(1)= (2)46×101= (3)= (4)0.2÷10%= (5)915﹣519= (6)= (7)= (8)42÷0.25=
计算,能简算则简算.++ 1﹣﹣++﹣(﹣)++﹣+﹣.