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 = ______
20 + 10 = ______
23 + 10 = ______
60 + 20 = ______
45 + 20 = ______
1 × 10 = ______
38 − 10 = ______
37 + 10 = ______
74 + 20 = ______
57 − 10 = ______
6 × 10 = ______
62 + 10 = ______
80 + 20 = ______
30 + 20 = ______
26 + 20 = ______
43 + 20 = ______
28 − 10 = ______
90 − 10 = ______
78 − 10 = ______
25 − 10 = ______
