12-8=
A.20B.6C.7D.4D
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- 2026-04-261÷0.3≈A.3.339B.5C.0.3D.0.13
- 2026-04-26养鸡专业户卖出公鸡98只.还剩公鸡87只.母鸡的只数是原有公鸡的5倍.养鸡专业户共有多少只母鸡?正确列式是A.×5B.98+87×5C.98×5+87D.98×5-87
- 2026-04-26用珠算做2099+407-1573+5084-3263+2348-638=A.2099B.4464C.7122D.9004