Toán Lớp 6: tính nhanh
32 . ( -64) – 64 . 68
-54.76+12.(-76)
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Toán Lớp 6: tính nhanh
32 . ( -64) – 64 . 68
-54.76+12.(-76)
Comments ( 2 )
=32.(-64)+(-64).68
=(-64).(32+68)
=(-64).100
=-6400
-54.76+12.(-76)
=54.(-76)+12.(-76)
=(-76).(54+12)
=(-76).66
=-5016