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
51 − 10 = ______
46 − 10 = ______
53 − 10 = ______
3 × 10 = ______
47 − 10 = ______
1 × 10 = ______
9 × 10 = ______
71 − 10 = ______
74 − 10 = ______
4 × 10 = ______
82 − 10 = ______
33 + 20 = ______
55 − 10 = ______
54 + 20 = ______
13 + 10 = ______
19 + 20 = ______
37 + 20 = ______
87 + 20 = ______
69 + 20 = ______
60 + 20 = ______
