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
38 + 20 = ______
32 + 10 = ______
45 + 10 = ______
86 + 10 = ______
8 × 10 = ______
87 − 10 = ______
67 + 10 = ______
9 × 10 = ______
62 − 10 = ______
55 + 10 = ______
15 + 20 = ______
40 − 10 = ______
50 − 10 = ______
11 + 20 = ______
47 − 10 = ______
79 + 10 = ______
1 × 10 = ______
3 × 10 = ______
91 − 10 = ______
25 + 10 = ______
