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
38 + 20 = ______
62 + 10 = ______
72 + 20 = ______
9 × 10 = ______
2 × 10 = ______
20 + 20 = ______
50 − 10 = ______
53 + 10 = ______
31 + 20 = ______
16 + 10 = ______
1 × 10 = ______
77 + 10 = ______
75 − 10 = ______
87 + 20 = ______
82 − 10 = ______
84 + 10 = ______
80 − 10 = ______
7 × 10 = ______
26 − 10 = ______
3 × 10 = ______
