a, 38+88=(30+80)+(8+8)
=110+16
=128 (nhẩm đó)
b,97+87= (90+80)+(7+7)
=170+14
=184 (nhẩm thật)
c, 36+76=(30+70)+(6+6)
=100+12
=112 (nhẩm thiệt)
A) 38+88=(30+80)+(8+8)
=110+16
=128
B)97+87= (90+80)+(7+7)
=170+14
=184
C) 36+76=(30+70)+(6+6)
=100+12
=112
\(38+88\)
\(=30+80+8+8\)
\(=110+16\)
\(=126\)
\(97+87\)
\(=90+80+7+7\)
\(=170+14\)
\(=184\)
a) \(38+88\)
\(\Rightarrow=30+80+8+8\)
\(\Rightarrow=110+16\)
\(\Rightarrow=126\)
b) \(97+87\)
\(\Rightarrow=90+80+7+7\)
\(\Rightarrow=170+14\)
\(\Rightarrow184\)
Chúc bạn học tốt!
38 + 88
= 30 + 80 + 8 + 8
= 110 + 8 + 8
= 110 + 16
= 126
97 + 87
= 90 + 80 + 7 + 7
= 170 + 14
= 184
36 + 76
= 30 + 70 + 6 + 6
= 100 + 6 + 6
= ( 100 + 6 ) + 6
= 106 + 6
= 112
