Các câu hỏi tương tự
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50.
tính nhanh :
a, 53 + 8 + 53 + 53 c, ( 8 + 8 x 7 - 9 ) x ( 9 x 9 - 81 )
b, 24 x 2 x 2 + 2 x 12 x 6 d, ( 15 x 3 - 11 x 2 - 10 ) x ( 405 : 5 - 81 )
Tính nhanh :
a, 53 + 8 + 53 + 53 c, ( 8 + 8 x 7 - 9 ) x ( 9 x 9 - 81 )
b, 24 x 2 x 2 + 2 x 12 x 6 d, ( 15 x 3 - 11 x 2 - 10 ) x ( 405 : 5 - 81 )
Tính nhanh :
a, 53 + 8 + 53 + 53 c, ( 8 + 8 x 7 - 9 ) x ( 9 x 9 - 81 )
b , 24 x 2 x 2 + 2 x 12 x 6 d, ( 15 x 3 - 11 x 2 - 10 ) x ( 405 : 5 - 81 )
29 + 47 +71+53+76+24+31+ 79= bao nhiêu
69339:3=....... 16547:2=......... 86428:4=........ 16547:2=....... 25837:3=......
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+36+37+38+39+40=
Đố ae biết 1+11+21+31+41+51+61+71+81+91-21=?
38<x+31-6<40