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
65 − 10 = ______
51 − 10 = ______
82 − 10 = ______
34 + 20 = ______
72 + 20 = ______
20 + 20 = ______
38 − 10 = ______
57 + 10 = ______
8 × 10 = ______
17 + 10 = ______
49 + 20 = ______
1 × 10 = ______
47 − 10 = ______
48 + 20 = ______
64 + 10 = ______
83 − 10 = ______
7 × 10 = ______
23 + 20 = ______
72 + 10 = ______
11 + 20 = ______
