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
8 × 10 = ______
38 − 10 = ______
68 − 10 = ______
36 − 10 = ______
56 − 10 = ______
83 + 20 = ______
31 − 10 = ______
2 × 10 = ______
82 − 10 = ______
9 × 10 = ______
61 + 20 = ______
5 × 10 = ______
31 + 10 = ______
77 + 20 = ______
6 × 10 = ______
68 + 20 = ______
83 + 10 = ______
69 − 10 = ______
25 + 20 = ______
35 + 10 = ______
