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 = ______
32 − 10 = ______
32 + 10 = ______
88 + 10 = ______
38 + 20 = ______
41 − 10 = ______
80 + 20 = ______
56 + 20 = ______
82 − 10 = ______
27 − 10 = ______
21 + 20 = ______
83 + 20 = ______
59 + 20 = ______
76 − 10 = ______
30 + 10 = ______
25 + 10 = ______
30 − 10 = ______
97 − 10 = ______
30 + 20 = ______
6 × 10 = ______
