计算．（能简算的要写出简算过程）
①4.52+0.61+1.39+6.48
②4.27﹣（1.96﹣1.73）
③（294.4﹣19.2×6）÷（6+8）
④12.5×0.76×0.4×8×2.5．
相关试题
计算．（能简算的要写出简算过程）
①4.52+0.61+1.39+6.48
②4.27﹣（1.96﹣1.73）
③（294.4﹣19.2×6）÷（6+8）
④12.5×0.76×0.4×8×2.5．
+
=
= 8.7﹣4.8= 1.25×2.4=
= 1÷
=
=
×1
= 1÷7+
+
= 1.02﹣0.43=
÷25%×
=
×2÷
=
×4÷
=
×0.7=
×1
=
+
﹣
=
﹣
﹣
=（
+
）×24=
×
= 7.2÷0.8×9=
=
+
= 10﹣5.75= 7÷0.01=
×
= 1.7×5.4×0=
+
﹣1÷3）=
﹣
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