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
37 − 10 = ______
67 − 10 = ______
57 + 20 = ______
29 − 10 = ______
77 + 10 = ______
81 − 10 = ______
65 + 20 = ______
23 + 10 = ______
3 × 10 = ______
28 + 10 = ______
50 + 10 = ______
61 − 10 = ______
9 × 10 = ______
63 + 10 = ______
30 + 20 = ______
54 + 20 = ______
5 × 10 = ______
24 − 10 = ______
31 + 20 = ______
8 × 10 = ______
