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
65 + 20 = ______
89 − 10 = ______
34 − 10 = ______
36 − 10 = ______
41 + 10 = ______
82 − 10 = ______
53 + 20 = ______
1 × 10 = ______
17 + 20 = ______
67 + 10 = ______
70 + 20 = ______
59 + 20 = ______
3 × 10 = ______
54 + 20 = ______
41 + 20 = ______
93 − 10 = ______
6 × 10 = ______
80 − 10 = ______
20 + 20 = ______
5 × 10 = ______
