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
55 + 20 = ______
9 × 10 = ______
28 − 10 = ______
68 + 20 = ______
17 + 20 = ______
90 − 10 = ______
29 + 10 = ______
65 + 20 = ______
2 × 10 = ______
1 × 10 = ______
13 + 10 = ______
24 + 10 = ______
71 + 20 = ______
4 × 10 = ______
5 × 10 = ______
35 − 10 = ______
49 + 10 = ______
7 × 10 = ______
83 + 10 = ______
83 − 10 = ______
