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
36 + 10 = ______
29 − 10 = ______
89 + 20 = ______
44 + 20 = ______
75 + 20 = ______
9 × 10 = ______
3 × 10 = ______
27 + 10 = ______
66 + 20 = ______
14 + 10 = ______
87 + 20 = ______
21 − 10 = ______
57 + 20 = ______
23 − 10 = ______
87 − 10 = ______
81 − 10 = ______
5 × 10 = ______
53 − 10 = ______
2 × 10 = ______
85 − 10 = ______
