12+54=66
65+16=81
98+24=122
90+10=100
62+99=161
78+20=98
nhớ **** mình nha
12+54=66
65+16=81
98+24=122
90+10=100
62+99=161
78+20=98
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+51+52+53+54+56+57+58+59+60+61+62+63+64+65+66+67+68+69+70=?
57+67+98+54+65+23+87-78-87-78-87x0= ??????????????
12+99+88+1+35+24+65+76=
10 + 21 + 32 + 43 + 54 + 65 + 76 + 87 + 98 = ???
Lưu ý: Ko sai đề, chỉ là mình thêm vào một tí thôi.
12 +x = 96
96 - x = 12
78 + x = 98
x + 27 = 69
x + 20 = 85
x + 85 = 129
x + 129 = 201
x - 129 = 98
Tìm x, biết:
x + 28 = 54
44 + x = 72
x – 38 = 62
98 - x = 19
tinh nhanh
10-12+14-16+18-20+22-24+26-28+30
x + 24 = 78 - 54
Tính:
a)\(\frac{38}{42}+\frac{84}{42}=\) b)\(\frac{12}{36}+\frac{56}{12}=\)
c)\(\frac{81}{24}+\frac{98}{42}=\) d)\(\frac{87}{99}+\frac{98}{99}=\)
