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
9 × 10 = ______
68 + 10 = ______
51 + 10 = ______
21 + 10 = ______
63 − 10 = ______
62 + 20 = ______
83 − 10 = ______
39 + 10 = ______
81 − 10 = ______
1 × 10 = ______
24 + 10 = ______
27 − 10 = ______
67 + 10 = ______
2 × 10 = ______
52 + 10 = ______
39 − 10 = ______
61 + 10 = ______
6 × 10 = ______
21 − 10 = ______
48 + 10 = ______
