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
61 + 20 = ______
42 + 10 = ______
57 − 10 = ______
30 + 10 = ______
9 × 10 = ______
82 + 20 = ______
81 − 10 = ______
14 + 10 = ______
30 + 20 = ______
7 × 10 = ______
46 + 20 = ______
1 × 10 = ______
73 − 10 = ______
79 − 10 = ______
53 − 10 = ______
6 × 10 = ______
89 + 20 = ______
70 − 10 = ______
74 + 20 = ______
73 + 10 = ______
