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
66 − 10 = ______
64 − 10 = ______
82 + 20 = ______
36 + 20 = ______
32 − 10 = ______
76 + 10 = ______
55 − 10 = ______
2 × 10 = ______
57 − 10 = ______
62 − 10 = ______
71 − 10 = ______
27 + 20 = ______
11 + 20 = ______
9 × 10 = ______
1 × 10 = ______
65 − 10 = ______
7 × 10 = ______
73 + 10 = ______
53 + 10 = ______
87 − 10 = ______
