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
73 + 20 = ______
33 + 20 = ______
4 × 10 = ______
88 + 20 = ______
81 − 10 = ______
1 × 10 = ______
29 + 10 = ______
36 − 10 = ______
44 + 10 = ______
75 + 20 = ______
37 − 10 = ______
30 + 20 = ______
72 + 20 = ______
39 + 10 = ______
2 × 10 = ______
60 − 10 = ______
89 − 10 = ______
25 + 10 = ______
51 − 10 = ______
11 + 10 = ______
