按分数给图涂色.
4.5×0.4+0.4×5.5.
脱式计算.你是最棒的!6.5×8+3.5×8﹣44 8.5+(5.6﹣4.8)×13 1.9﹣1.9×(1.9﹣1.9)×29+×29+29 1×÷× ×101﹣49.5×﹣(50﹣)×0.6 ×+÷+ ÷[×(1﹣)]897×﹣37.5%+104×0.375 [+×(﹣0.375)]÷ ++++﹣(+)
17.5×0.65+0.175×25+1.75.
计算:19.58×66+22×91.26= . 64×12.5×0.25×0.05= .
2.89×4.68+4.68×6.11+4.68.