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
56 + 10 = ______
1 × 10 = ______
38 + 10 = ______
63 − 10 = ______
4 × 10 = ______
66 + 10 = ______
9 × 10 = ______
49 + 20 = ______
61 + 20 = ______
19 + 20 = ______
24 + 10 = ______
58 + 20 = ______
77 + 10 = ______
7 × 10 = ______
36 − 10 = ______
5 × 10 = ______
34 + 20 = ______
91 − 10 = ______
8 × 10 = ______
78 + 20 = ______
