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:神马作文网作业帮 分类:综合作业 时间:2024/11/06 15:37:50
用简便方法计算.
0.16+14.95+5.84 | 13.74-7.28-5.72 | 1.59+3.3-0.59+6.7 |
7.02-4.5+0.98 | 21.36-(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
=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