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
47 + 20 = ______
69 + 20 = ______
1 × 10 = ______
43 + 10 = ______
54 + 10 = ______
80 − 10 = ______
19 + 20 = ______
9 × 10 = ______
23 − 10 = ______
57 − 10 = ______
53 + 20 = ______
82 − 10 = ______
73 − 10 = ______
6 × 10 = ______
8 × 10 = ______
42 − 10 = ______
5 × 10 = ______
7 × 10 = ______
3 × 10 = ______
29 − 10 = ______
