谁出几道速算题给我做啊!放在下一页,不要让我做的时候看到.还要写做的时间,在多少时间里做完算好还是差!
更新时间： 2025-08-22 11:49:15
1人问答
问题描述：
谁出几道速算题给我做啊!
放在下一页,不要让我做的时候看到.还要写做的时间,在多少时间里做完算好还是差!
谭阳红回答：
计算4.75-9.64+8.25-1.36=_____.
2.计算3.17-2.74+4.7+5.29-0.26+6.3=_____.
3.计算(5.25+0.125+5.75)8=_____.
4.计算34.58.23-34.5+2.7734.5=_____.
5.计算6.250.16+2640.0625+5.26.25+0.62520=_____.
6.计算0.035935+0.035+30.035+0.07610.5=_____.
7.计算19.9837-199.81.9+19980.82=_____.
8.计算13.59.9+6.510.1=_____.
9.计算0.1250.250.564=_____.
10.计算11.843-8600.09=_____.
答案1.2
原式=（4.75+8.25）-(9.64+1.36)
=13-11
=2
2.17
原式=(3.71+5.29)+(4.7+6.3)-(2.74+0.26)
=9+11-3
=17
3.89
原式=(5.25+5.75+0.125)8
=(11+0.125)8
=118+0.1258
=88+1
=89
4.345
原式=34.5(8.23+2.77-1)
=34.510
=345
5.62.5
原式=6.250.16+2.646.25+5.26.25+6.252
=6.25(0.16+2.64+5.2+2)
=6.2510
=62.5
6.35
7.1998
8.199.3
原式=13.5(10-0.1)+6.5(10+0.1)
=13.510-13.50.1+6.510+6.50.1
=135-1.35+65+0.65
=(135+65)-(1.35-0.65)
=200-0.7
=199.3
9.1
原式=0.1250.250.5(842)
=(0.1258)(0.254)(0.52)
=111
=1
10.430
原式=11.843-43200.09
=11.843-431.8
=43(11.8-1.8)
=4310
=430
11.
原式=32.14+64.280.5378(0.25+0.75-80.125)
=32.14+64.280.53780
=32.14
12.
原式=0.111(8125)73+111(93)
=11173+11127
=111(73+27)
=111100
=11100
13.
原式=(2000-2)+(200-0.2)+(20-0.02)+(2-0.002)
=2222-2.222
=2222-(10-7.778)
=2222-10+7.778
=2219.778
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