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 = ______
25 + 10 = ______
85 + 10 = ______
21 − 10 = ______
7 × 10 = ______
21 + 20 = ______
69 + 10 = ______
79 + 20 = ______
50 − 10 = ______
25 − 10 = ______
72 + 10 = ______
35 − 10 = ______
67 − 10 = ______
55 + 10 = ______
8 × 10 = ______
87 + 10 = ______
59 + 20 = ______
64 + 10 = ______
74 − 10 = ______
75 + 20 = ______
