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
77 + 20 = ______
65 + 10 = ______
67 + 10 = ______
65 + 20 = ______
38 − 10 = ______
76 − 10 = ______
31 + 20 = ______
8 × 10 = ______
40 − 10 = ______
42 + 10 = ______
30 + 20 = ______
21 − 10 = ______
1 × 10 = ______
3 × 10 = ______
82 + 10 = ______
57 + 10 = ______
72 + 10 = ______
2 × 10 = ______
26 − 10 = ______
12 + 20 = ______
