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 = ______
78 + 20 = ______
68 − 10 = ______
49 + 20 = ______
22 + 10 = ______
55 + 20 = ______
65 − 10 = ______
5 × 10 = ______
77 − 10 = ______
71 + 10 = ______
30 + 20 = ______
50 + 10 = ______
7 × 10 = ______
23 − 10 = ______
48 + 10 = ______
82 + 10 = ______
52 + 20 = ______
3 × 10 = ______
49 + 10 = ______
38 − 10 = ______
