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
52 + 10 = ______
83 − 10 = ______
63 − 10 = ______
81 + 20 = ______
4 × 10 = ______
77 + 20 = ______
2 × 10 = ______
28 − 10 = ______
19 + 20 = ______
59 + 10 = ______
11 + 10 = ______
7 × 10 = ______
89 − 10 = ______
1 × 10 = ______
91 − 10 = ______
61 + 20 = ______
51 − 10 = ______
54 + 20 = ______
17 + 20 = ______
5 × 10 = ______
