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
31 − 10 = ______
2 × 10 = ______
26 + 10 = ______
9 × 10 = ______
26 + 20 = ______
91 − 10 = ______
71 + 20 = ______
85 − 10 = ______
1 × 10 = ______
75 + 20 = ______
23 − 10 = ______
15 + 20 = ______
45 − 10 = ______
73 + 20 = ______
54 + 20 = ______
22 + 10 = ______
64 − 10 = ______
8 × 10 = ______
11 + 10 = ______
48 − 10 = ______
