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
74 + 10 = ______
55 + 20 = ______
89 + 10 = ______
21 + 10 = ______
3 × 10 = ______
64 + 20 = ______
6 × 10 = ______
9 × 10 = ______
58 + 20 = ______
4 × 10 = ______
46 + 10 = ______
46 − 10 = ______
8 × 10 = ______
63 − 10 = ______
59 + 20 = ______
64 + 10 = ______
59 − 10 = ______
90 − 10 = ______
24 + 20 = ______
53 + 20 = ______
