题目内容

12×125×8=12×（125×8）
[     ]
正确
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相关题目
0.79+0.79×99= 1÷5+1÷5= 0.89×101-0.89= 2-0.64-0.36=
1.1-2.7÷27= 12.4×11-12.4= 1.25×3.3×0= 20-3.7-7.3=
5×0.75÷1.5×0.75= 1-0.1×0.1= 6×0.125×8= 1×0.4÷1×0.4=
用递等式计算，能巧算得就要巧算：
81.7+36.57-（31.7-13.43）
14000÷56
56000÷125                          
8.1×18+18+8.1×81
40-12.78+7.22                      
1650÷[5×（98+12）]．
口算
9.5×100=		 1.25×8 0.25×0.9×4= 1.87×0=
3.5-1.5= 1.2×0.4= 3.6×0.5= 0.6×5=
0.24+0.6= 0.64×0.03= 7.8+2.2-1.5= 8×0.05=
0.125×8= 1.3×4= 0.4×0.6= 3×0.08=
0.35×2= 2.9×0.3= 10-0.9= 5.67×0=
0.8×0.01= 2.5×0.2= 2.4×0.3= 1.6×0.25=
0.17×0.3= 15×0.01= 10×0.07= 0.7×0.05=
0.2×0.05= 7.8×0.01= 0.2×0.26= 0.04×4=
12.4+2.1= 0.08×0.5= 0.14×4= 9×2.5+9×1.5=
1.8×0.5= 2.3×5= 0.3×3.6= 8×0.9+8×2.1=
2.5×4= 0.8+2.7×2= 0.05×7= 4.8+2.1+7.9=
3.4-1.8= 2.5+0.2×2= 0.02×0.1= 5.4-2.8=
0.3×0.2= 3.5×2×0.1= 0.3×0.3= 0×10.3×2.2=
0.12×0.7= 0.2×0.5= 0.92×0.4= 6.7-1.43=
1.2×4= 1.3×2= 1.2×0.3= 4.6+5.08=
直接写得数．
305÷0.5=		 0.16×3= 0.36÷0.3= 12-6.2-3.8=
0.125×8= 1-0.27= 0.3×0.13= 0.309÷0.01=
（2013?福田区模拟）直接写得数．
8×3.14= 0.43= 0.125×8= 1-
5
7
=
9÷
1
9
=		 1÷0.25=
1
2
-
1
3
=
1
3
+
1
4
=

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