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
68 + 20 = ______
27 − 10 = ______
8 × 10 = ______
3 × 10 = ______
2 × 10 = ______
17 + 20 = ______
52 + 20 = ______
45 + 10 = ______
67 + 20 = ______
34 + 20 = ______
78 + 20 = ______
84 + 10 = ______
73 + 10 = ______
57 − 10 = ______
32 + 20 = ______
69 − 10 = ______
74 + 10 = ______
73 + 20 = ______
44 − 10 = ______
30 − 10 = ______
