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
15 + 20 = ______
80 − 10 = ______
43 − 10 = ______
59 + 10 = ______
1 × 10 = ______
75 + 10 = ______
9 × 10 = ______
6 × 10 = ______
82 + 10 = ______
81 + 10 = ______
11 + 20 = ______
48 − 10 = ______
71 − 10 = ______
51 + 20 = ______
58 − 10 = ______
2 × 10 = ______
13 + 10 = ______
82 + 20 = ______
76 − 10 = ______
49 + 20 = ______
