tính nhanh
48.700-24.45.20 trên 45-40 +35-30+25-20+15
tính nhanh
48.700-24.45.20 phần 45-40+35-30+25-20+15-10+5.
Q=48.700-24.45.20 phần 45-40+35-30+25-20+15-10+5. Tính Q
Tính nhanh :
\(\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}\)
\(\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}\)
TÍNH NHANH NHA
\(
\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}\)
\(=\frac{48.700-24.2.10.45}{5+5+5+5+5}\)
\(=\frac{48.700-48.450}{5.5}\)
\(=\frac{48.\left(700-450\right)}{25}\)
\(=\frac{48.250}{25}\)
\(=480\)
Tính hợp lí
a) (27.45+27.55):(2+4+6+...+14+16+18)
b) (27.700-24.45.20):(45-40+35-30+25-20+15-10+5)
yen oi ban co the ket ban voi minh khong
1. Tính nhanh:
\(\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}\)
Giải dùm mk nha
Thực hiện phép tính bằng cách hợp lí:
a) \(\frac{27.4500+135.550.2}{2+4+6+...+14+16+18}\)
b) \(\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}\)
a) \(\frac{27.4500+135.550.2}{2+4+6+...+18}=\frac{270.450+270.550}{9.20:2}=\frac{270.1000}{90}=3000\)
b) \(\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}=\frac{48.700-48.450}{25}=\frac{48.250}{25}=480\)
\(a,\frac{1978.1979+1980.21+1958}{1980.1979-1978.1979}\)
\(b,\frac{26.108-26.12}{32-28+24-20+16-12+8-4}\)\(c,\frac{48.700-24.45.20}{45-40+35-30+25-20+15-10+5}\)
tính hợp lí
a) 341.67+341.16+659.83
b)42.53+47.156-47.114
c) (44.52.60) / (11.13.15)
d) (168.168-168.58)/110
e) (16.17-5)/ (16.16+11)
f) (27.45+27.55)/(2+4+6+...+14+16+18)
g)(27.700-24.45.20)/(45-40+35-30+25-20+15-10+5)
h)1+6+11+16+...+46+51