六年的简算题 帮帮~~~

来源:百度知道 编辑:UC知道 时间:2024/06/10 06:26:35
1125-997 998+1246 4 +3.2+5 +6.8

12 -(1 +2 ) 400÷125÷8 25×(37×8)

( - )×12 1 ×2 ×

125×8.8 4.35+4.25+3.65+3.75

4 +3.2+5 +6.8
=(4+5)+(3.2+6.8)
=9+10
=19

400÷125÷8
=400÷(125×8)
=400÷1000
=0.4

25×(37×8)
=(25×8)×37
=200×37
=7400

4.35+4.25+3.65+3.75
=(4.35+3.65)+(4.25+3.75)
=8+8
=16

1125-997
=1125-(1000-3)
=1125-1000+3
=18
998+1246
=1000-2+1246
=2244
4 +3.2+5 +6.8
=3.2+6.8+(4+5)
=19
12 -(1 +2 )
=12-1-2=9
400÷125÷8
=400/(125*8)
=400/1000
=0.4
25×(37×8)
=25*4*(2*37)
=7400
125×8.8
=125*8*1.1
=1100
4.35+4.25+3.65+3.75
=4.35+3.65+(4.25+3.75)
=16

1125-997=1125-1000+3=2123
998+1246=1000+1246-2=2244
4 +3.2+5 +6.8=4+5+(3.2+6.8)=19
12 -(1 +2 ) =12-2+1=11
400÷125÷8=400/(125*8)=400/1000=0.4
25×(37×8)=25*4*37*2=100*74=7400
( - )×12这个看不明白
1 ×2 ×125×8.8=1*2*1.1*(125*8)=2200
4.35+4.25+3.65+3.7