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数学计算竞赛
班级:_________ 姓名:_________
一、直接写出得数。(0.5×20=10)
0.2×4.3= 3.7+3= 0.72×100= 3.2×0.1=
2+ 4.8= 7×0.6= 6×0.15= 9.7× 12.4 = 0.87-0.7= 3.67÷10= 0.2 + 0.99= 0.72÷8= 125×0.8= 1-0.99=
220-180= 0.4×0.07= 9.34÷ 100= 9.7×0.01= 1.99 ÷0.01= 8.2-7=
二、竖式计算。(☆题得数保留一位小数)(5 ×8=40) 18.2 – 9.02 12.6 ÷ 35 15 + 6.92 ☆32.3 × 5.2
5.98÷0.23 12.6÷0.28 3.64÷52 93.6÷0.052
三、计算下面各题(能简算的要简算)。(5×10=50)
10.8 ×4.2 - 4.2 ×1 .8 + 4.2 38.5 -10.5 ×0.8
7.29 ×4.6 + 46 ×1.271 0.25×8.5×4
2.881÷0.43-0.24×3.5 9.52÷57+4.84
28-(3.4+1.25×2.4) 2.55×7.1+2.45×7.1
4.8×7.8+78×0.52 7777×9+1111×3
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