口算
13×40= 560÷40= 3÷100= 0.28×100÷10=
3﹣1.4= 3.7+1.13= 120×6= 125×7×8=
45×20= 2.5+0.9= 0÷78= 10﹣2.3﹣2.7=
84÷4= 101×28= 1000×0.013= 25×12+25×28=
脱式计算,能简便的要用简便方法计算.
0.36×1.5×0.40.05×3.2×4026×15.7+15.7×74
3.78×0.5﹣0.653.98+13.4×0.24(9.37+9.37+9.37+9.37)×2.5.
能简算的要用简便方法计算
24.1×1.5+7.59×15(3.7+17×0.4)÷3.575.36÷12﹣4.32×0.5
8.8×0.1257.6×5.3+3.7×7.66.6÷(0.68+0.42)
脱式计算.(能简算的要简算)
(1)1.25×8.37×0.8(2)(9﹣2.35)×0.64(3)0.25×32×12.5
(4)0.15×1999+0.15(5)0.37×1.4﹣0.4×0.37(6)8.7×9.9.
递等式计算(能简算的要简算).
(1)191.3﹣47.2+96.9
(2)9.63+13.78﹣3.63
(3)50.03﹣6.5﹣0.5
(4)25×125×16
(5)2506﹣506×3+27
(6)99×63+63.
计算下列各题,能简算的要简算.
2.56÷0.04÷0.51.92÷0.12﹣2.37.3﹣1.5÷0.247.52×0.65÷0.752.