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
5 × 10 = ______
78 − 10 = ______
69 + 10 = ______
67 + 10 = ______
17 + 20 = ______
1 × 10 = ______
33 − 10 = ______
23 + 10 = ______
80 − 10 = ______
82 − 10 = ______
8 × 10 = ______
74 + 20 = ______
27 − 10 = ______
79 + 20 = ______
63 + 20 = ______
44 − 10 = ______
76 + 20 = ______
3 × 10 = ______
32 + 20 = ______
65 + 20 = ______
