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– 34 –
B. CUBING / CUBOS
5
3
= 5 × 5 × 5 =
CORRECTION OF ERRORS / CORRECCIÓN DE ERRORES
A. 123 + 556 → 123 + 456
B. 1234567 → 1234578
(1) (2) (3) (4)
5 5. 5
.
×
5
.
=K
25
.
25.
25
.
=K
125
.
125.
5 5. 5
.
×
25. 5
.
×
5
.
=
125
.
125.
(1) (2) (3) (4)
123 123. 123
.
+
556 0.
456 579. 456
.
+
579
.
579.
(1) (2) (3)
1234567 1,234,567.
123,456.
12,345.
78 1,234,578.