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
24 + 20 = ______
82 + 20 = ______
47 + 10 = ______
43 + 10 = ______
47 − 10 = ______
9 × 10 = ______
4 × 10 = ______
1 × 10 = ______
7 × 10 = ______
19 + 10 = ______
95 − 10 = ______
77 − 10 = ______
52 + 20 = ______
66 + 20 = ______
74 + 10 = ______
79 + 10 = ______
62 − 10 = ______
5 × 10 = ______
33 − 10 = ______
21 − 10 = ______
