Bài 1: Tính Nhẩm
a, 9.24.25
b, 12.125.54
c, 64.125.54
d, 425.7.4-170.60
e, 8.9.14+6.17.12+19.4.18
help me
Bài 1: Tính Nhẩm a, 9.24.25 b, 12.125.54 c, 64.125.54 d, 425.7.4-170.60 e, 8.9.14+6.17.12+19.4.18 help me
By Mackenzie
By Mackenzie
Bài 1: Tính Nhẩm
a, 9.24.25
b, 12.125.54
c, 64.125.54
d, 425.7.4-170.60
e, 8.9.14+6.17.12+19.4.18
help me
`a, 9.24.25`
`= 9.6.4.25`
`= 54.100`
`= 5400`
`b, 12.125.54`
`= 3.4.125.2.27`
`= 1000.3.27`
`= 1000.81`
`= 81000`
a, 9.24.25
= 9.6.4.25
= 54.100
= 5400
b, 12.125.54
= 3.4.125.2.27
= 1000.3.27
= 1000.81
= 81000
c, 64.125.54
= 8.8.125.54
= 1000.8.54
= 1000.432
= 432000
d, 425.7.4-170.60
=
e, 8.9.14+6.17.12+19.4.18
= 2.4.9.14+2.3.17.4.3+2.4.9.19
=2.4.9.( 14+17+19)
= 72.50
= 3600