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
2 × 10 = ______
15 + 20 = ______
4 × 10 = ______
70 + 10 = ______
8 × 10 = ______
17 + 20 = ______
63 − 10 = ______
61 − 10 = ______
13 + 10 = ______
25 − 10 = ______
57 − 10 = ______
20 + 20 = ______
39 + 10 = ______
75 + 10 = ______
38 − 10 = ______
3 × 10 = ______
36 − 10 = ______
7 × 10 = ______
63 + 10 = ______
81 + 10 = ______
