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
8 × 10 = ______
44 + 10 = ______
80 + 10 = ______
23 + 10 = ______
76 − 10 = ______
29 + 10 = ______
52 + 10 = ______
9 × 10 = ______
31 + 10 = ______
34 − 10 = ______
89 + 20 = ______
7 × 10 = ______
15 + 10 = ______
24 − 10 = ______
30 + 20 = ______
77 + 20 = ______
21 + 20 = ______
1 × 10 = ______
27 − 10 = ______
68 − 10 = ______
