1.5×4= 6.4÷0.8= 7.2×0.01= 10÷4=0.36×2= 1÷0.125= 0.25×8= 8.1÷0.3=0.1×0.02= 1.6÷16= 2.4×2.5= 3.2÷1.6=(1.5+0.25)×4= 3.5+7.6= 3×0.2×0.5= 12﹣6.2﹣3.8=8×(2.5+0.25)= 2.56﹣0.37= 0.125÷0.25= 7×1.6+7×0.4=
用简便方法计算. (1)101×67(2)98.5﹣42.28﹣7.72 (3)1.38+14.7+8.62+5.3(4)3200÷4÷25.
简便运算. (1)4.2×4.2+4.2×5.8(2)0.89×99.
脱式计算,能简算的要简算. 1.08×0.8÷0.272.6×1.7+1.4×1.70.4×63×2.5.
用线把相等的式子连起来 a+b+ca×(b×c) a×b×ca+(b+c) 121﹣91﹣9121+(91+9) 121+91+9121﹣(91+9) 85×9985×100+85 85×10185×100﹣85 85×25×485×(25×4) 85÷25÷485÷(25×4)
计算下面各题,怎样简便就怎样算. 432÷36+12×2 3000÷25÷4 8.46﹣2.25﹣3.75 72×125 135×67﹣67×35 812÷(532﹣36×14)