计算下列各题.(能简算的要简算).91÷2.6÷0.05= 6.3×3.7+6.3×6.3= (3.7+1.7×0.4)÷2.5= 7.28+3.
计算下列各题.(能简算的要简算).91÷2.6÷0.05=6.3×3.7+6.3×6.3=(3.7+1.7×0.4)÷2.5=7.28+3.2÷2.5=0.74+0.9×...
计算下列各题.(能简算的要简算).91÷2.6÷0.05= 6.3×3.7+6.3×6.3= (3.7+1.7×0.4)÷2.5= 7.28+3.2÷2.5= 0.74+0.9×7.4= 7.8÷0.125÷0.8=
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(1)91÷2.6÷0.05, =35÷0.05, =700; (2)6.3×3.7+6.3×6.3, =6.3×(3.7+6.3), =6.3×10, =63; (3)(3.7+1.7×0.4)÷2.5, =(3.7+0.68)÷2.5, =4.38÷2.5, =1.752; (4)7.28+3.2÷2.5, =7.28+1.28, =8.56; (5)0.74+0.9×7.4, =(1+9)×0.74, =10×0.74, =7.4; (6)7.8÷0.125÷0.8, =7.8÷(0.125×0.8), =7.8÷0.1, =78. |
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