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
81 + 10 = ______
46 + 20 = ______
4 × 10 = ______
85 + 20 = ______
34 + 10 = ______
42 − 10 = ______
55 − 10 = ______
71 + 20 = ______
40 + 10 = ______
72 + 20 = ______
1 × 10 = ______
42 + 20 = ______
74 − 10 = ______
34 − 10 = ______
63 + 20 = ______
67 − 10 = ______
6 × 10 = ______
62 + 10 = ______
29 + 20 = ______
8 × 10 = ______
