题目列表(包括答案和解析)
口算.
(1)4.8 +2.7= |
(2)6.1 -2.4= |
(3)1.3 +5.72= |
(4)10 -0.72= |
(5)3.36 +2.64= |
(6)7.52 -1.32= |
(7)7.3 +4.7+2.7= |
(8)13 -1.25-0.75= |
(9)4.96 +3.9+5.04= |
(10)7.36 -2.36+4.2= |
口算.
(1)4.8 +2.7= |
(2)6.1 -2.4= |
(3)1.3 +5.72= |
(4)10 -0.72= |
(5)3.36 +2.64= |
(6)7.52 -1.32= |
(7)7.3 +4.7+2.7= |
(8)13 -1.25-0.75= |
(9)4.96 +3.9+5.04= |
(10)7.36 -2.36+4.2= |
直接写得数
(1)178 ÷6≈ |
(2)52 ×68≈ |
(3)0.5 +0.6= |
(4)7.8 -5.4= |
简便计算.
0.85×994 2.1-3.9-6.1
9.14×1.25-1.14÷0.8 52.5×0.63+3.7×5.25
口算.
(1)1.4 +3.8= |
(2)9.7 -6.5= |
(3)3.75 -2.25= |
(4)10 -9.2= |
(5)4.2 -1.6= |
(6)42.3 +5.6= |
(7)0.27 +0.73= |
(8)4.24 +3.6= |
(9)1.4 +0.3= |
(10)0.5 +0.08= |
(11)1 -0.03= |
(12)7.2 -3.7= |
(13)3 -0.52= |
(14)4.6 -1.4= |
(15)0.12 +0.03= |
(16)4.6 -1.4= |
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