Toán Lớp 4: giúp gấp ek
Tính tổng : 1 + 2 + 3 + …. + 99 + 100
Nhanh mik cho hn ak
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Toán Lớp 4: giúp gấp ek
Tính tổng : 1 + 2 + 3 + …. + 99 + 100
Nhanh mik cho hn ak
Comments ( 2 )
= ( 1 + 99 ) + ( 2 + 98 ) + ( 3 + 97 ) + …… + 100
= 100 + 100 + 100 + …… + 100 ( 50 số 100 )
= 100 x 50
= 5000