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 = ______
63 + 20 = ______
6 × 10 = ______
1 × 10 = ______
35 + 10 = ______
49 + 20 = ______
73 + 20 = ______
83 + 10 = ______
74 − 10 = ______
15 + 20 = ______
31 + 20 = ______
73 − 10 = ______
55 + 20 = ______
40 − 10 = ______
71 + 20 = ______
9 × 10 = ______
90 − 10 = ______
21 − 10 = ______
7 × 10 = ______
71 − 10 = ______
