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(1)0.3+9.7×0.23

来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/14 07:33:00
(1)0.3+9.7×0.23
(2)91.6-3.8-6.62
(3)1.03×(8.8÷0.25)
(4)2.23×7.5-2.23+3.5×2.23
(5)1.2÷[(5.1-3.6)×0.08]
(6)99.9+9.9+0.9+0.3.
(1)0.3+9.7×0.23,
=0.3+2.231,
=2.531;
(2)91.6-3.8-6.62,
=87.8-6.62,
=81.18;
(3)1.03×(8.8÷0.25),
=1.03×35.2,
=36.256;
(4)2.23×7.5-2.23+3.5×2.23,
=2.23×(7.5-1+3.5),
=2.23×10,
=22.3;
(5)1.2÷[(5.1-3.6)×0.08],
=1.2÷[1.5×0.08],
=1.2÷0.12,
=10;
(6)99.9+9.9+0.9+0.3,
=(100-0.1)+(10-0.1)+(1-0.1)+0.1,
=111-0.3+0.3,
=111.