Toán Lớp 5: B1:Tính nhanh:
C1:0,1+8,97+8,96+8,98+8,99
C2:10-10×10+10
giúp mk nha!
Nhanh cho vote 5* và ctlhn *-* :)) ^-^
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Toán Lớp 5: B1:Tính nhanh:
C1:0,1+8,97+8,96+8,98+8,99
C2:10-10×10+10
giúp mk nha!
Nhanh cho vote 5* và ctlhn *-* :)) ^-^
Comments ( 2 )
0,1+8,97+8,96+8,98+8,99
=0,1+(8,97+8,98)+(8,96+8,99)
=0,1+17,95+17,95
=0,1+(17,95+17,95)
=0,1+35,9
=36
2)
10−10×10+10
=10xx1-10xx10+10xx1
=10×(1−10+1)
=10×(−8)
=−80