解: 2.4*2.4*6.6+2.4 =2.4*(2.4+6.6) =2.4*9=21.6 或继续: =2.4*(10-1) =2.4*10-2.4*1 =24-2.4 =21.6
2.4*6.05=14.52;6.6÷8.8=0.75;56÷11=5.09;9.6÷4.2≈2.29;
x+2.4=6.6x+2.4-2.4=6.6-2.4x=4.2
x+2.4=6.6解:x=6.6-2.4x=4.2
0. 1 0 4 6 ￣￣￣￣￣￣ 0. 6 2 4 6 ￣￣￣￣￣￣￣ 2 4 2 4 ￣￣￣￣￣￣￣￣ 0
5.9*2.4=14.167.8*3.25=25.356.6*0.92=6.0720.32*1.7≈0.54(得数保留两位小数) 3.14*3.9≈12.2(得数保留一位小数)
你好!2.4*(6.6÷0.12)=2.4*6.6÷0.12=2.4÷0.12*6.6=20*6.6=132如有疑问,请追问.
2.4*3.6+ 6.6*3.6 +3.6=3.6x(2.4+6.6+1)=3.6x10=36如有帮助请采纳,如对本题有疑问可追问,Good luck!
390-36÷15*6+6 =390-2.4*6+6 =390-14.4+6 =375.6+6 =381.6
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