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
48 + 10 = ______
5 × 10 = ______
18 + 10 = ______
43 + 20 = ______
78 + 10 = ______
82 + 10 = ______
2 × 10 = ______
91 − 10 = ______
9 × 10 = ______
34 + 10 = ______
3 × 10 = ______
61 + 20 = ______
45 − 10 = ______
70 − 10 = ______
62 + 20 = ______
35 + 20 = ______
77 − 10 = ______
28 − 10 = ______
6 × 10 = ______
31 − 10 = ______
