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
89 + 10 = ______
8 × 10 = ______
27 + 20 = ______
30 + 10 = ______
7 × 10 = ______
1 × 10 = ______
81 + 10 = ______
44 − 10 = ______
4 × 10 = ______
47 + 10 = ______
52 − 10 = ______
26 + 10 = ______
84 − 10 = ______
71 − 10 = ______
28 + 10 = ______
59 + 10 = ______
42 + 20 = ______
77 + 20 = ______
6 × 10 = ______
13 + 10 = ______
