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
83 + 20 = ______
4 × 10 = ______
60 − 10 = ______
78 + 20 = ______
2 × 10 = ______
15 + 20 = ______
77 + 10 = ______
37 − 10 = ______
9 × 10 = ______
50 − 10 = ______
56 + 10 = ______
57 − 10 = ______
42 + 20 = ______
29 − 10 = ______
76 + 10 = ______
78 + 10 = ______
1 × 10 = ______
82 − 10 = ______
6 × 10 = ______
18 + 10 = ______
