题目内容
【题目】脱式算得数。(能简算的要简算)
0.25×3.78×4 10.1×9.8
1.24×8.7+17.6×0.87 3.2×6.5÷0.26
【答案】3.78 98.98
26.1 80
【解析】
0.25×3.78×4
=0.25×4×3.78
=1×3.78
=3.78
10.1×9.8
=10×9.8+0.1×9.8
=98+0.98
=98.98
1.24×8.7+17.6×0.87
=8.7×1.24+8.7×1.76
=8.7×(1.24+1.76)
=8.7×3
=26.1
3.2×6.5÷0.26
=20.8÷0.26
=80

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