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1 直接写出得数。(每题1分,共20分)
$60 + 33 = $ $987 - 456 = $ $836 + 17 = $ $234×7 = $
$162×40 = $ $180÷6 = $ $96 - 47 = $ $175 + 274 = $
$579 - 23 = $ $543×8 = $ $273×50 = $ $189÷9 = $
$0.27 + 0.43 = $ $125×8 = $ $0.5 + 0.75 = $ $0÷5 + 83 = $
$74÷100 = $ $7 - 2.8 = $ $7.9×1000 = $ $5.6÷10×100 = $
$60 + 33 = $ $987 - 456 = $ $836 + 17 = $ $234×7 = $
$162×40 = $ $180÷6 = $ $96 - 47 = $ $175 + 274 = $
$579 - 23 = $ $543×8 = $ $273×50 = $ $189÷9 = $
$0.27 + 0.43 = $ $125×8 = $ $0.5 + 0.75 = $ $0÷5 + 83 = $
$74÷100 = $ $7 - 2.8 = $ $7.9×1000 = $ $5.6÷10×100 = $
答案
93 531 853 1638
6480 30 49 449
556 4344 13650 21
0.7 1000 1.25 83
0.74 4.2 7900 56
6480 30 49 449
556 4344 13650 21
0.7 1000 1.25 83
0.74 4.2 7900 56
2 列竖式计算。(每题3分,共12分)
$21.4 - 8.46 = $ $5.8 + 12.67 = $ $24.32 - 14.7 = $ $34.72 + 6.75 = $
$21.4 - 8.46 = $ $5.8 + 12.67 = $ $24.32 - 14.7 = $ $34.72 + 6.75 = $
答案
竖式略
12.94 18.47 9.62 41.47
12.94 18.47 9.62 41.47
3 计算下面各题,能简算的要简算。(每题3分,共18分)
$13.55 + 18.73 + 6.45$ $38.12 - (18.12 + 3.5)$ $6.43 + 6.87 + 1.57 + 0.13$
$4.57 - 3.4 + 3.43 - 1.6$ $32.88 - (2.88 + 7.12)$ $3.59 + 13.6 + 2.41 + 6.4$
$13.55 + 18.73 + 6.45$ $38.12 - (18.12 + 3.5)$ $6.43 + 6.87 + 1.57 + 0.13$
$4.57 - 3.4 + 3.43 - 1.6$ $32.88 - (2.88 + 7.12)$ $3.59 + 13.6 + 2.41 + 6.4$
答案
38.73 16.5 15
3 22.88 26
3 22.88 26
