Page 23 - Matematicas 4

Lunes
23 + 12 = 23 + 17 = 23 + 15 =
(23 + 17) + 5 =
Martes
18 + 25 = 18 + 35 = 18 + 45 =
(18 + 25) + 3 =
Miércoles
22 + 18 = 42 + 28 = 52 + 38 =
(14 + 36) + 50 =
Jueves
32 + 18 = 32 + 15 = 32 + 23 =
54 + 16 = 54 + 18 = 54 + 45 =
14 + 6 = 14 + 36 = 14 + 26 =
90 + 50 = 90 + 5 = 900 + 5 =
5 + 90 + 5 = 90 + 5 = 20 + 90 + 5 =
41 + 19 = 41 + 15 = 41 + 14 =
33 + 17 = 43 + 27 = 53 + 27 =
27 + 13 = 37 + 13 = 47 + 13 =
90 + 60 = 90 + 6 = 9 + 60 =
10 + 90 + 6 = 90 + 6 = 20 + 90 + 6 =
900 + 10 = 90 + 100 = 90 + 10 = 90 + 10 + 9 =
Viernes
(5 + 90 + 5) x 2 =
10 + 90 + 10 = 25 + 90 + 10 = 30 + 90 + 10 =
22