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
57 + 20 = ______
55 + 20 = ______
48 − 10 = ______
2 × 10 = ______
42 − 10 = ______
31 + 20 = ______
24 − 10 = ______
51 + 10 = ______
15 + 10 = ______
56 − 10 = ______
35 + 10 = ______
11 + 20 = ______
6 × 10 = ______
89 + 20 = ______
11 + 10 = ______
3 × 10 = ______
96 − 10 = ______
82 + 10 = ______
54 − 10 = ______
5 × 10 = ______
