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
41 + 20 = ______
53 + 20 = ______
59 + 10 = ______
4 × 10 = ______
70 − 10 = ______
77 + 10 = ______
3 × 10 = ______
52 + 10 = ______
72 − 10 = ______
22 + 20 = ______
55 − 10 = ______
82 − 10 = ______
51 + 20 = ______
66 − 10 = ______
1 × 10 = ______
2 × 10 = ______
25 + 10 = ______
18 + 20 = ______
76 + 20 = ______
99 − 10 = ______
