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
11 + 20 = ______
11 + 10 = ______
63 + 10 = ______
12 + 20 = ______
82 + 20 = ______
5 × 10 = ______
37 + 20 = ______
92 − 10 = ______
55 − 10 = ______
82 + 10 = ______
49 + 20 = ______
6 × 10 = ______
59 − 10 = ______
39 − 10 = ______
24 − 10 = ______
21 + 20 = ______
3 × 10 = ______
77 + 20 = ______
72 + 20 = ______
2 × 10 = ______
