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
65 + 20 = ______
27 − 10 = ______
72 − 10 = ______
45 + 10 = ______
2 × 10 = ______
69 − 10 = ______
8 × 10 = ______
3 × 10 = ______
78 + 10 = ______
22 + 20 = ______
28 + 20 = ______
61 + 10 = ______
31 + 20 = ______
93 − 10 = ______
7 × 10 = ______
28 + 10 = ______
1 × 10 = ______
6 × 10 = ______
23 − 10 = ______
15 + 10 = ______
