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 = ______
34 + 10 = ______
47 + 10 = ______
46 − 10 = ______
4 × 10 = ______
6 × 10 = ______
58 + 10 = ______
79 − 10 = ______
38 + 10 = ______
78 − 10 = ______
49 + 20 = ______
72 + 20 = ______
77 + 20 = ______
74 + 20 = ______
77 − 10 = ______
8 × 10 = ______
54 + 10 = ______
25 + 20 = ______
2 × 10 = ______
3 × 10 = ______
