海淀最新修订版人教新课标数学口算题卡五年级下册第61页答案,
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2.5×1.7+2.3×2.5=
0.3×25×0.4=
2.5×7.8×4=
（1.25+0.25）×0.2=
7.2×0.3+2.8×0.3=
2.5×24=
3.5+3.5×3=
218+218×7=
（10+0.5）×4=
10.8-3.9-4.2=
（0.25×5）×（0.2×4）=
3.73-1.41-0.59=
4.68×90+4.68=
8.2×101-8.2=
1.43-（0.43+0.2）=
7.6×214+2.4×2.4=
5.9×3.1-5.9×0.1=
2.67+3.14+2.33=
5.9×10.1=
2.8+7.4+7.2+2.6=