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
21 + 20 = ______
4 × 10 = ______
8 × 10 = ______
82 + 10 = ______
23 + 20 = ______
58 − 10 = ______
59 − 10 = ______
81 + 10 = ______
39 + 20 = ______
30 + 20 = ______
65 + 20 = ______
35 + 10 = ______
26 − 10 = ______
5 × 10 = ______
1 × 10 = ______
39 − 10 = ______
7 × 10 = ______
39 + 10 = ______
17 + 10 = ______
47 − 10 = ______
