5: 4.88×2.4=11.712(元) ≈11.7(元)
13.6×1.3=17.68(元)≈17.7(元)
5.95×3.5=20.825(元)≈20.8(元)
6:
(1)12.4×1.7+12.4
= 21.08+12.4
= 33.48(千克)
(2)12.4×1.7-12.4=8.68(千克)
7: 480×(0.4×0.4)
= 480×0.16
= 76.8(平方米)
【www.ksjqmj.com--五年级补充习题答案】
5: 4.88×2.4=11.712(元) ≈11.7(元)
13.6×1.3=17.68(元)≈17.7(元)
5.95×3.5=20.825(元)≈20.8(元)
6:
(1)12.4×1.7+12.4
= 21.08+12.4
= 33.48(千克)
(2)12.4×1.7-12.4=8.68(千克)
7: 480×(0.4×0.4)
= 480×0.16
= 76.8(平方米)
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