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
82 − 10 = ______
28 − 10 = ______
71 − 10 = ______
2 × 10 = ______
63 + 10 = ______
5 × 10 = ______
25 + 10 = ______
21 + 10 = ______
30 − 10 = ______
55 + 20 = ______
77 + 10 = ______
32 + 10 = ______
69 + 20 = ______
93 − 10 = ______
54 + 10 = ______
52 − 10 = ______
13 + 10 = ______
3 × 10 = ______
79 + 20 = ______
43 + 20 = ______
