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
69 − 10 = ______
3 × 10 = ______
45 + 10 = ______
89 + 10 = ______
9 × 10 = ______
89 + 20 = ______
7 × 10 = ______
48 + 10 = ______
57 + 10 = ______
29 − 10 = ______
77 + 20 = ______
30 + 10 = ______
76 − 10 = ______
82 + 10 = ______
83 + 10 = ______
79 + 10 = ______
31 + 20 = ______
8 × 10 = ______
82 − 10 = ______
2 × 10 = ______
