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
68 + 10 = ______
82 + 10 = ______
23 − 10 = ______
1 × 10 = ______
31 + 20 = ______
31 + 10 = ______
77 − 10 = ______
61 − 10 = ______
3 × 10 = ______
74 + 20 = ______
5 × 10 = ______
8 × 10 = ______
74 + 10 = ______
84 + 20 = ______
4 × 10 = ______
48 + 10 = ______
69 − 10 = ______
63 + 20 = ______
67 − 10 = ______
88 + 20 = ______
