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
30 − 10 = ______
21 + 10 = ______
7 × 10 = ______
67 − 10 = ______
14 + 10 = ______
87 + 20 = ______
8 × 10 = ______
9 × 10 = ______
68 + 10 = ______
45 + 20 = ______
17 + 10 = ______
2 × 10 = ______
4 × 10 = ______
20 + 20 = ______
79 + 20 = ______
71 − 10 = ______
27 + 10 = ______
89 + 10 = ______
48 + 20 = ______
3 × 10 = ______
