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
71 + 10 = ______
9 × 10 = ______
11 + 20 = ______
24 + 10 = ______
8 × 10 = ______
23 − 10 = ______
63 + 10 = ______
55 − 10 = ______
28 + 20 = ______
39 + 20 = ______
36 − 10 = ______
80 − 10 = ______
29 + 10 = ______
4 × 10 = ______
21 − 10 = ______
45 + 10 = ______
78 + 10 = ______
36 + 20 = ______
61 − 10 = ______
72 − 10 = ______
