Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
48 − 10 = ______
81 + 20 = ______
77 + 20 = ______
37 − 10 = ______
75 + 10 = ______
1 × 10 = ______
93 − 10 = ______
71 − 10 = ______
46 + 20 = ______
84 − 10 = ______
68 − 10 = ______
55 + 10 = ______
43 + 20 = ______
82 + 20 = ______
4 × 10 = ______
79 − 10 = ______
58 + 10 = ______
86 + 10 = ______
68 + 10 = ______
36 + 20 = ______
