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 = ______
77 − 10 = ______
69 + 20 = ______
53 + 10 = ______
46 − 10 = ______
7 × 10 = ______
35 − 10 = ______
18 + 10 = ______
45 + 10 = ______
82 − 10 = ______
1 × 10 = ______
51 + 20 = ______
61 + 20 = ______
50 + 10 = ______
9 × 10 = ______
44 + 20 = ______
17 + 10 = ______
3 × 10 = ______
2 × 10 = ______
65 + 20 = ______
