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用简便方法计算. 0.16+14.95+5.8413.74-7.28-5.721.59+3.3-0.59+6.77.02

来源:学生作业帮 编辑:作业帮 分类:综合作业 时间:2024/07/16 17:59:00
用简便方法计算.
0.16+14.95+5.8413.74-7.28-5.721.59+3.3-0.59+6.7
7.02-4.5+0.9821.36-(4.36+0.98)54.31-6.99.
(1)0.16+14.95+5.84
=0.16+5.84+14.95
=6+14.95
=20.95

(2)13.74-7.28-5.72
=13.74-(7.28+5.72)
=13.74-13
=0.74

(3)1.59+3.3-0.59+6.7
=1.59-0.59+(3.3+6.7)
=1+10
=11

(4)7.02-4.5+0.98
=7.02+0.98-4.5
=8-4.5
=3.5

(5)21.36-(4.36+0.98)
=21.36-4.36-0.98
=17-0.98,
=16.02

(6)54.31-6.99
=54.31-7+0.01
=47.31+0.01
=47.32