Tinh tong sau bang cach hop ly:
B = 5/2.1 + 4/1.11 + 3/11.2 + 1/2.15 + 13/15.4
Ghi ca cach lam nhe ! Ai nhanh nhat, dung nhat tick lun !!!!!!
bai1.Tinh tong cua cac so nguyen am tu -1738 den -16
bai2.Tinh tong sau bang 2 cach
A=1+(-2)+3+(-4)+....+99+(-100)
tinh tong sau bang cach hop ly
a = 2+2^2+2^3+2^4+...+2^100
mong moi nguoi giup do
A= 1-2+3-4+…+-98+99
Tinh tong sau mot cach hop ly
dat dau ngoac 1 cach thich hop nhat de tinh cac tong dai so sau :
a, 834 - 268 +2365 - 1834
b, 13 - 12 + 11 + 10 - 9 +8 -7 - 6 +5 - 4 +3 +2 - 1
dat dau ngoac 1 cach thich hop nhat de tinh cac tong dai so sau :
a, 834 - 268 +2365 - 1834
b, 13 - 12 + 11 + 10 - 9 +8 -7 - 6 +5 - 4 +3 +2 - 1
dat dau ngoac 1 cach thich hop nhat de tinh cac tong dai so sau :
a, 834 - 268 +2365 - 1834
b, 13 - 12 + 11 + 10 - 9 +8 -7 - 6 +5 - 4 +3 +2 - 1
tinh bang cach hop li nếu có thể toán 6
(-1/5+3/12) +-3/4
-1/2+3/21+2/-6+5/-30
tinh tong
1+(-2)+3+(-4)+.....+19+(-20)1-2+3-4+.....+99-1002-4+6-8+......+48-50-1+3-5+7-....+97-991+2-3-4+......+97+98-99-100