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 = ______
71 − 10 = ______
91 − 10 = ______
52 + 10 = ______
15 + 10 = ______
1 × 10 = ______
14 + 10 = ______
78 − 10 = ______
68 + 20 = ______
7 × 10 = ______
52 − 10 = ______
89 + 20 = ______
56 + 20 = ______
36 + 20 = ______
14 + 20 = ______
81 + 20 = ______
9 × 10 = ______
28 − 10 = ______
15 + 20 = ______
33 − 10 = ______
