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
2 × 10 = ______
63 + 20 = ______
74 + 20 = ______
83 + 10 = ______
60 + 20 = ______
45 − 10 = ______
82 + 20 = ______
42 + 10 = ______
49 − 10 = ______
80 − 10 = ______
8 × 10 = ______
70 − 10 = ______
34 + 10 = ______
46 − 10 = ______
5 × 10 = ______
69 + 10 = ______
42 − 10 = ______
69 + 20 = ______
65 + 10 = ______
11 + 10 = ______
