口算题1
χ+83.1=100.1 x+1.8×2=7.5
1.6×χ=3.28 χ÷0.18 =8.45
1.26÷ χ=28 112-4 x=38
x÷7.2=15-3.8 2x+18=31
7x-3 x-2 x=39 χ÷ 1 0.2=0.5
(χ+12)×6=108 12.5× 88=
42÷0.7÷6= 10.2×35=
5.6÷3.5= 7.2×48+52× 7.2=
2 x+x-6=15
口算题2
16.7-0.92-1.08= 7+5χ=42
1.8× 4.5= 3.6÷0.1=
2.5×4= 1.5×4=
13χ-7.5χ=18.7 χ÷ 0.13 =16.9
(16.8+1.6)÷ 4 0.49÷0.7=
0.75+0.8= 0.13×4=
2.4-0.8= 8.5×100=
5.4÷10= 4.2×1000=
3.2÷100= 0.45÷0.15=
18×0.3= 1.2÷0.3=
8.5÷1.7=
口算题3
0.04×25= 53.73-17.49=
8.76+0.351= 42.4+7.6=
1.58+2.42= 7.8-5.6=
1.25×4= 7.8×0.5=
3.9+2.7= 0.24÷0.3=
2.5×4= 0.3÷10=
1.25×8= 0÷4.8=
77÷7.7= 12-3.8=
8.1-0.05= 0.24÷0.3=
0.2×0.5= 2.5×3=
4.4÷(5×0.2)= 7×1.3=
0.96÷0.06= 0.36×0.3=
0.35÷0.7=
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