题目
脱式计算.(能简算的请简算)
4.36+8.3+3.64
37.7-(8.98+7.7)
19.57-2.37-3.63
8-7.24+5.87.
4.36+8.3+3.64
37.7-(8.98+7.7)
19.57-2.37-3.63
8-7.24+5.87.
提问时间:2020-11-03
答案
(1)4.36+8.3+3.64,
=(4.36+3.64)+8.3,
=8+8.3,
=16.3;
(2)37.7-(8.98+7.7),
=37.7-7.7-8.98,
=30-8.98,
=21.02;
(3)19.57-2.37-3.63,
=19.57-(2.37+3.63),
=19.57-6,
=13.57;
(4)8-7.24+5.87,
=0.76+5.87,
=6.63.
=(4.36+3.64)+8.3,
=8+8.3,
=16.3;
(2)37.7-(8.98+7.7),
=37.7-7.7-8.98,
=30-8.98,
=21.02;
(3)19.57-2.37-3.63,
=19.57-(2.37+3.63),
=19.57-6,
=13.57;
(4)8-7.24+5.87,
=0.76+5.87,
=6.63.
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