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
61 − 10 = ______
82 + 20 = ______
73 − 10 = ______
28 − 10 = ______
8 × 10 = ______
27 + 10 = ______
35 − 10 = ______
50 + 10 = ______
79 + 20 = ______
6 × 10 = ______
2 × 10 = ______
80 + 20 = ______
87 − 10 = ______
41 − 10 = ______
15 + 10 = ______
71 − 10 = ______
24 + 20 = ______
1 × 10 = ______
42 + 20 = ______
4 × 10 = ______
