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
8 × 10 = ______
69 − 10 = ______
27 + 10 = ______
91 − 10 = ______
31 − 10 = ______
61 + 10 = ______
48 + 20 = ______
2 × 10 = ______
50 + 10 = ______
75 + 20 = ______
67 − 10 = ______
11 + 20 = ______
25 − 10 = ______
46 − 10 = ______
1 × 10 = ______
9 × 10 = ______
5 × 10 = ______
4 × 10 = ______
64 − 10 = ______
57 + 20 = ______
