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
23 + 20 = ______
69 + 20 = ______
3 × 10 = ______
25 + 20 = ______
87 − 10 = ______
36 − 10 = ______
45 + 10 = ______
37 − 10 = ______
62 + 10 = ______
64 − 10 = ______
53 + 10 = ______
29 − 10 = ______
7 × 10 = ______
88 + 20 = ______
69 + 10 = ______
9 × 10 = ______
15 + 20 = ______
54 + 20 = ______
57 − 10 = ______
47 + 10 = ______
