几道计算题一、 直接写得数:(共9分)1-0.09 = 4.25+0.5 = 28÷0.1 = 2÷5 = 0.49÷0.7= 0.15×20 = 6.2-2 = 2.5×0.04 = 9÷2.9 ≈( )(用四舍五入法得数保留两位小数)二、竖式计算:1.5×5.62= 81.04÷2.8 (除到

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几道计算题一、 直接写得数:(共9分)1-0.09 = 4.25+0.5 = 28÷0.1 = 2÷5 = 0.49÷0.7= 0.15×20 = 6.2-2 = 2.5×0.04 = 9÷2.9 ≈( )(用四舍五入法得数保留两位小数)二、竖式计算:1.5×5.62= 81.04÷2.8 (除到

几道计算题一、 直接写得数:(共9分)1-0.09 = 4.25+0.5 = 28÷0.1 = 2÷5 = 0.49÷0.7= 0.15×20 = 6.2-2 = 2.5×0.04 = 9÷2.9 ≈( )(用四舍五入法得数保留两位小数)二、竖式计算:1.5×5.62= 81.04÷2.8 (除到
几道计算题
一、 直接写得数:(共9分)
1-0.09 = 4.25+0.5 = 28÷0.1 = 2÷5 =
0.49÷0.7= 0.15×20 = 6.2-2 = 2.5×0.04 =
9÷2.9 ≈( )(用四舍五入法得数保留两位小数)
二、竖式计算:
1.5×5.62= 81.04÷2.8 (除到商的百分位,写出余数)
三、解方程:(共14分)
4x-0.4×5=8     (65+x-17) ÷3=30  3(x-6)= 7x-50 (检验)
四、递等式计算(能简便的用简便方法计算):(共12分)
48-5.8×2.5 4.32+[(28.4-25.9)×0.5]÷0.1
[(6.1-4.6)×0.8+0.01]÷1.1 11.72-4.56-(1.72+3.44)

几道计算题一、 直接写得数:(共9分)1-0.09 = 4.25+0.5 = 28÷0.1 = 2÷5 = 0.49÷0.7= 0.15×20 = 6.2-2 = 2.5×0.04 = 9÷2.9 ≈( )(用四舍五入法得数保留两位小数)二、竖式计算:1.5×5.62= 81.04÷2.8 (除到
0.91 4.75 280 0.4
0.7 3 4.2 0.1
3.10
8.43 .
剩下的LZ自己做