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 = ______
79 + 10 = ______
7 × 10 = ______
55 − 10 = ______
89 + 20 = ______
9 × 10 = ______
42 − 10 = ______
34 − 10 = ______
83 + 20 = ______
79 − 10 = ______
41 + 20 = ______
91 − 10 = ______
21 + 10 = ______
63 + 20 = ______
8 × 10 = ______
15 + 10 = ______
57 − 10 = ______
2 × 10 = ______
60 + 20 = ______
69 + 10 = ______
