题目列表(包括答案和解析)
31×69= | 4148÷32= | 0.102×99= | 5492÷19= | 88.4+11.8= |
25π= | 4.9×8.1= | 2.18+6.89= | 143÷672= | 103×59= |
0.018×250= |
31×69= | 4148÷32= | 0.102×99= | 5492÷19= | 88.4+11.8= |
25π= | 4.9×8.1= | 2.18+6.89= | 143÷672= | 103×59= |
0.018×250= |
计算下面各题(能用简便方法的用简便方法). 22.7×1.25×O.8 |
3.91×2.8+6.09×2.8 |
9.83×(3.8-2.3)+1.5×6.17 | 3.6×51+36×4.9 |
7.8×9.9 | 5.4-3.2+12.6-7.8 |
7.2×4.1-9.5÷7.6 | 8.125×3+7×8.125 |
(0.75×27.5-3.405)÷0.8 | [0.16+(3-1.272)÷1.2]×1.25. |
计算下面各题(能用简便方法的用简便方法).
22.7×1.25×O.8 | 3.91×2.8+6.09×2.8 |
9.83×(3.8-2.3)+1.5×6.17 | 3.6×51+36×4.9 |
7.8×9.9 | 5.4-3.2+12.6-7.8 |
7.2×4.1-9.5÷7.6 | 8.125×3+7×8.125 |
(0.75×27.5-3.405)÷0.8 | [0.16+(3-1.272)÷1.2]×1.25. |
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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