题目内容
脱式计算. 32-1.8×5-3.46 |
3.6÷〔(1.3+0.6)×5〕 |
32.34÷0.l×0.5. |
分析:(1)先算乘法,再算减法;
(2)先算小括号内的,再算中括号内的,最后算括号外的;
(3)按运算顺序从左向右依次计算.
(2)先算小括号内的,再算中括号内的,最后算括号外的;
(3)按运算顺序从左向右依次计算.
解答:解:(1)32-1.8×5-3.46,
=32-9-3.46,
=23-3.46,
=19.54;
(2)3.6÷〔(1.3+0.6)×5〕,
=3.6÷〔1.9×5〕,
=3.6÷9.5,
=
;
(3)32.34÷0.l×0.5,
=323.4×0.5,
=161.7.
=32-9-3.46,
=23-3.46,
=19.54;
(2)3.6÷〔(1.3+0.6)×5〕,
=3.6÷〔1.9×5〕,
=3.6÷9.5,
=
36 |
95 |
(3)32.34÷0.l×0.5,
=323.4×0.5,
=161.7.
点评:考查了小数的四则混合运算,注意运算顺序和运算法则.
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