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
25 + 10 = ______
23 + 20 = ______
39 + 10 = ______
5 × 10 = ______
73 − 10 = ______
24 − 10 = ______
6 × 10 = ______
63 − 10 = ______
64 + 20 = ______
33 + 20 = ______
4 × 10 = ______
62 − 10 = ______
43 + 10 = ______
12 + 20 = ______
3 × 10 = ______
72 + 10 = ______
74 + 10 = ______
97 − 10 = ______
43 − 10 = ______
39 + 20 = ______
