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
86 + 20 = ______
39 + 20 = ______
86 + 10 = ______
4 × 10 = ______
71 + 10 = ______
59 − 10 = ______
1 × 10 = ______
33 − 10 = ______
78 − 10 = ______
87 + 10 = ______
3 × 10 = ______
41 − 10 = ______
49 + 10 = ______
74 − 10 = ______
61 − 10 = ______
17 + 10 = ______
8 × 10 = ______
82 + 10 = ______
61 + 10 = ______
34 − 10 = ______
