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
77 + 10 = ______
43 + 20 = ______
69 + 10 = ______
8 × 10 = ______
49 + 20 = ______
53 + 10 = ______
56 − 10 = ______
31 − 10 = ______
79 + 10 = ______
81 + 10 = ______
21 + 10 = ______
23 − 10 = ______
20 + 20 = ______
7 × 10 = ______
4 × 10 = ______
82 + 10 = ______
33 − 10 = ______
2 × 10 = ______
52 − 10 = ______
61 + 10 = ______
