约分:= = = =
比40千克多20%的是 千克.
×54.
直接写结果.×= ÷= 1111÷11= 4.6+4= 1÷12.5%== 102﹣33= = 10.8﹣9.9﹣= 0.9×9+0.9=5.38﹣(1.8+2.38)= 121×29≈ 238÷41≈ = 2﹣2÷9==
×14= 36×= 1÷= ×÷×=×6= ×= 11﹣= 23×52=
直接写得数.×2.8 0.5÷0.01 2﹣1.4 2.5×12 2.3÷10%125÷(0.25+) 10.8﹣3.9﹣4.1 (12+)÷3.