列式计算（1）56加上38的4倍的和乘以16，积是多少？（2）720与160的和，除以84与40的差，商是多少？
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口算 55+37= 80﹣26= 1400﹣800= 2+210= 9+300= 82+0= 1﹣= += ﹣= ．
口算我最棒.+= += ﹣= ﹣=+= 1+= ﹣0.2= +0.3=+= 1﹣+= ﹣﹣= ++=
= = = =0.32= = = == 2x+x=
240﹣40÷4= 125×（8+8）= ÷12=6 2000×3+60=320×11÷32= 1﹣= 24×5﹣25×4= 8×13×25=4005÷19≈
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= 2x+x=
= 24×5﹣25×4= 8×13×25=
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