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
34 − 10 = ______
20 + 20 = ______
89 + 10 = ______
77 + 10 = ______
73 + 10 = ______
5 × 10 = ______
1 × 10 = ______
84 + 20 = ______
62 − 10 = ______
70 − 10 = ______
82 + 20 = ______
9 × 10 = ______
37 + 10 = ______
69 − 10 = ______
57 − 10 = ______
48 + 20 = ______
4 × 10 = ______
48 + 10 = ______
3 × 10 = ______
56 + 20 = ______
