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
13 + 10 = ______
26 − 10 = ______
88 + 10 = ______
37 + 10 = ______
65 + 20 = ______
23 + 20 = ______
82 − 10 = ______
69 − 10 = ______
21 − 10 = ______
51 + 10 = ______
76 + 20 = ______
66 − 10 = ______
2 × 10 = ______
66 + 10 = ______
25 − 10 = ______
1 × 10 = ______
58 − 10 = ______
85 − 10 = ______
85 + 10 = ______
36 + 20 = ______
