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
4 × 10 = ______
65 − 10 = ______
39 + 20 = ______
50 + 10 = ______
79 − 10 = ______
3 × 10 = ______
5 × 10 = ______
6 × 10 = ______
33 − 10 = ______
28 + 10 = ______
67 + 10 = ______
60 + 20 = ______
7 × 10 = ______
59 + 20 = ______
52 − 10 = ______
83 + 10 = ______
82 + 20 = ______
23 + 20 = ______
56 + 20 = ______
2 × 10 = ______
