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
57 + 20 = ______
69 − 10 = ______
72 − 10 = ______
8 × 10 = ______
32 + 10 = ______
33 + 10 = ______
31 − 10 = ______
63 + 20 = ______
1 × 10 = ______
35 + 10 = ______
60 − 10 = ______
20 + 20 = ______
28 − 10 = ______
44 − 10 = ______
50 + 10 = ______
61 − 10 = ______
23 + 20 = ______
19 + 10 = ______
41 + 20 = ______
23 + 10 = ______
