56+65
Đặt tính rồi tính:
58 + 29 | 185 − 65 |
27 + 65 | 92 − 87 |
246 + 513 | 888 − 357 |
432 + 56 | 564 − 44 |
14+34+65-76+56-76-14+132=
Đặt tính rồi tính:
a) 45 - 16 65 – 27
95 - 58 75 - 39
b) 96 - 77 56 – 18
66 - 29 77 - 48
c) 57 - 49 68 – 39
88 - 29 55 - 19
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=?
65+65+65+65+65+65=????
78 - 56 = ... 14 + 25 = ...
65 - 36 = ... 40 + 23 = ...
x + 65 = 25 + 65
23+x=78=456
x-56=78
x+56=56