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
83 − 10 = ______
74 + 20 = ______
79 − 10 = ______
17 + 20 = ______
42 + 10 = ______
1 × 10 = ______
72 + 10 = ______
22 + 20 = ______
16 + 20 = ______
59 + 20 = ______
45 − 10 = ______
85 − 10 = ______
38 + 10 = ______
44 + 20 = ______
85 + 20 = ______
65 − 10 = ______
67 + 10 = ______
50 − 10 = ______
99 − 10 = ______
82 − 10 = ______
