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
66 + 10 = ______
77 − 10 = ______
72 − 10 = ______
34 + 10 = ______
48 + 20 = ______
1 × 10 = ______
68 − 10 = ______
53 + 10 = ______
42 + 20 = ______
4 × 10 = ______
12 + 20 = ______
74 + 20 = ______
71 + 10 = ______
8 × 10 = ______
70 + 10 = ______
81 + 20 = ______
2 × 10 = ______
21 + 20 = ______
76 + 10 = ______
63 − 10 = ______
