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
1 × 10 = ______
60 + 10 = ______
38 − 10 = ______
19 + 20 = ______
69 + 20 = ______
9 × 10 = ______
3 × 10 = ______
39 + 10 = ______
53 − 10 = ______
82 + 20 = ______
44 + 10 = ______
80 + 20 = ______
31 − 10 = ______
5 × 10 = ______
67 + 10 = ______
59 + 20 = ______
8 × 10 = ______
7 × 10 = ______
18 + 10 = ______
22 − 10 = ______
