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
5 × 10 = ______
75 − 10 = ______
63 + 10 = ______
31 + 20 = ______
15 + 20 = ______
83 + 10 = ______
61 + 20 = ______
20 + 20 = ______
55 − 10 = ______
41 + 10 = ______
32 + 20 = ______
30 − 10 = ______
69 + 20 = ______
21 + 10 = ______
23 − 10 = ______
9 × 10 = ______
59 − 10 = ______
7 × 10 = ______
13 + 20 = ______
48 − 10 = ______
