×80= | 99÷ = | 9.6× = | ÷ = | 7÷ = |
÷ = | × ÷ = | × ÷ × = | ×0+ = | × ÷ = |
解: ×80=60, | 99÷ =165, | 9.6× =6, | ÷ = , | 7÷ =8, |
÷ =8, | × ÷ = , | × ÷ × = , | ×0+ = , | × ÷ ═1.5. |
,8,8,
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,
,1,5.分析:横向数:
(1)(2)(3)(4)(5)(6)(10)依据四则运算顺序即可解答,
(7)运用乘法结合律解答,
(8)运用乘法交换律解答,
(9)根据任何数乘0都得原数解答.
点评:本题考查知识点:(1)正确依据四则运算顺序进行计算,(2)正确运用简便算法进行计算,(3)0的特性.
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