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
67 + 20 = ______
3 × 10 = ______
69 + 20 = ______
36 + 10 = ______
47 + 10 = ______
80 − 10 = ______
74 + 20 = ______
57 − 10 = ______
23 + 10 = ______
54 + 10 = ______
34 + 20 = ______
43 + 20 = ______
72 − 10 = ______
90 − 10 = ______
29 + 20 = ______
25 + 10 = ______
5 × 10 = ______
7 × 10 = ______
70 + 10 = ______
67 − 10 = ______
