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
91 − 10 = ______
58 + 10 = ______
9 × 10 = ______
57 + 20 = ______
18 + 10 = ______
2 × 10 = ______
55 − 10 = ______
46 − 10 = ______
67 + 20 = ______
3 × 10 = ______
4 × 10 = ______
13 + 20 = ______
37 + 20 = ______
29 − 10 = ______
6 × 10 = ______
83 + 20 = ______
44 − 10 = ______
81 − 10 = ______
21 + 10 = ______
7 × 10 = ______
