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
74 − 10 = ______
23 + 10 = ______
45 + 20 = ______
82 − 10 = ______
34 + 20 = ______
55 + 10 = ______
8 × 10 = ______
12 + 20 = ______
3 × 10 = ______
9 × 10 = ______
26 − 10 = ______
55 + 20 = ______
68 + 10 = ______
2 × 10 = ______
4 × 10 = ______
12 + 10 = ______
61 + 10 = ______
25 − 10 = ______
67 + 20 = ______
71 + 20 = ______
