①15-[1-(-20-4)]②22.54+(-4.4)+(-12.54)+4.4③(2/3-1/2)-(1/3-5/6)④(-6/13)+(-7/13)-(-2)⑤11+(-22)-3×(-11)要写出顺序,正确哟
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①15-[1-(-20-4)]②22.54+(-4.4)+(-12.54)+4.4③(2/3-1/2)-(1/3-5/6)④(-6/13)+(-7/13)-(-2)⑤11+(-22)-3×(-11)要写出顺序,正确哟
①15-[1-(-20-4)]
②22.54+(-4.4)+(-12.54)+4.4
③(2/3-1/2)-(1/3-5/6)
④(-6/13)+(-7/13)-(-2)
⑤11+(-22)-3×(-11)
要写出顺序,正确哟
①15-[1-(-20-4)]②22.54+(-4.4)+(-12.54)+4.4③(2/3-1/2)-(1/3-5/6)④(-6/13)+(-7/13)-(-2)⑤11+(-22)-3×(-11)要写出顺序,正确哟
①=15-1-20-4=15-(1+4)-20=-10
②=22.54+(-4.4)+(-12.54)+4.4-12.54+12.54+4.4-4.4
=(22.54-12.54)+(-4.4+4.4)(-12.54+12.54)+(4.4-4.4)=10
③=(2/3-3/6)-(2/6-5/6)=2/3-2/6-3/6+5/6=2/3+0=2/3
④=-6/13-7/13+2=-1+2=1
⑤=(-1)×(-11)+2×(-11)-3×(-11)=(-1+2-3)×(-11)=(-2)×(-11)=22
①﹣10
②10
③2/3
④1
⑤22
口算的,错了不怨我
①15-[1-(-20-4)]=-10
②22.54+(-4.4)+(-12.54)+4.4=10
③(2/3-1/2)-(1/3-5/6)=2/3
④(-6/13)+(-7/13)-(-2)=1
⑤11+(-22)-3×(-11)=22
您好,湾暮 答案应该如下
①15-[1-(-20-4)]=15+25=-10
②22.54+(-4.4)+(-12.54)+4.4=10
③(2/3-1/2)-(1/3-5/6)=2/3
④(-6/13)+(-7/13)-(-2)=1
⑤11+(-22)-3×(-11)=22
欢迎采纳
1.原式=15-[1+20+4]
=15-1-20-4
=-10
2.原式=22.54-4.4-12.54+4.4
=10
3.原式=2/3-1/2-1/3+5/6
=5/3
4.原式=-6/13-7/13+2
=1
5.原式=11-22+33
=22
1.=15-25=-10
2.=22.54-12.54=10
3.=2/3-1/3-8/6=2/6-8/6=-2/3
4.=-1+2=1
5.=-11+33=22