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
29 + 10 = ______
8 × 10 = ______
55 + 20 = ______
6 × 10 = ______
62 + 20 = ______
90 − 10 = ______
62 + 10 = ______
46 − 10 = ______
11 + 20 = ______
34 + 20 = ______
16 + 20 = ______
47 − 10 = ______
71 − 10 = ______
66 − 10 = ______
56 − 10 = ______
39 − 10 = ______
4 × 10 = ______
57 + 10 = ______
77 + 20 = ______
40 − 10 = ______
