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
17 + 20 = ______
68 + 10 = ______
59 − 10 = ______
41 + 20 = ______
37 + 10 = ______
60 + 20 = ______
24 + 10 = ______
87 + 20 = ______
1 × 10 = ______
90 − 10 = ______
4 × 10 = ______
19 + 20 = ______
71 − 10 = ______
89 + 20 = ______
65 − 10 = ______
27 + 10 = ______
3 × 10 = ______
48 − 10 = ______
87 + 10 = ______
98 − 10 = ______
