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
71 + 10 = ______
57 + 20 = ______
18 + 20 = ______
2 × 10 = ______
94 − 10 = ______
80 − 10 = ______
59 − 10 = ______
4 × 10 = ______
89 − 10 = ______
33 + 10 = ______
91 − 10 = ______
89 + 10 = ______
9 × 10 = ______
6 × 10 = ______
50 + 10 = ______
45 + 20 = ______
24 + 10 = ______
78 − 10 = ______
62 + 10 = ______
7 × 10 = ______
