\(\frac{167.198+98}{198.168-100}\)
\(=\frac{167.198+98}{198.167+198-100}\)
\(=\frac{167.198+98}{198.167+98}=1\)
\(\frac{167.198+98}{198.168-100}\)
\(=\frac{167.198+98}{198.167+198-100}\)
\(=\frac{167.198+98}{198.167+98}=1\)
tinh nhanh
28(29-23) - 29(28-23)
(-167). (67-34)-67.(34-167)
tinh nhanh :2-4+6-8+...+198-200
Co the tinh nhanh tong 37+198 bang cach ap dung tinh chat ket hop cua phep cong
ap dung cac tinh chay phep cong va phep nhan de tinh nhanh
81 + 243 + 19
168+79+132
5.25.2.16.4
Tinh nhanh :
a, 321 + { 15 + [ 30 + (-321) ] }
b, ( 2016 + 432 ) + [ 168 + (-2016) ]
Tính nhanh:
a) 153.177-153.77+100.(-77)
b) (-29).(85-47)-85.(47-29)
c) (-167).(67-34)-67.(34-167)
=> THANKS TRƯỚC !!!
Tinh Hop ly:
a. (-12)*(-125)*(+17)
b. (-168)+(+72)*(-168)+(-168)*(+27)
c. 48* (-21) + (142)*(-24)
GIUP MK VOI , MAI PHAI NOP CHO THAY ROI.BAN NAO NHANH MA DUNG MK TICK CHO.THANK YOU...
tinh nhanh bai toan :
a) ( 44. 60 ) :(11 .15)
b) 2567 - ( 167 + 52 ) ( dau . la dau x nha)
ng nao lam vua nhanh vua dung mk se tk
tinh hop li(-167).83+167