En resumen

A) 2 + 34 + 89 - 30 = 95 b) 2. (4 + 5 + 3) = 2. (12) = 24 c) 18. 10 + 702÷78 - 1323÷63 - 6800÷100 = (18. 10) + (702÷78) - (1323÷63) - (6800÷100) = 180 + 9 - 21 - 68 = 189 - 21 - 68 = 168 - 68 = 100.

Mejor respuesta

Smurdoch
5

A) 2 + 34 + 89 - 30 = 95

b) 2.

(4 + 5 + 3) = 2.

(12) = 24

c) 18.

10 + 702÷78 - 1323÷63 - 6800÷100 = (18.

10) + (702÷78) - (1323÷63) - (6800÷100) = 180 + 9 - 21 - 68 = 189 - 21 - 68 = 168 - 68 = 100.