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
13 + 20 = ______
18 + 10 = ______
68 + 20 = ______
17 + 10 = ______
15 + 10 = ______
24 + 10 = ______
38 − 10 = ______
5 × 10 = ______
89 + 10 = ______
83 − 10 = ______
78 + 10 = ______
50 + 10 = ______
67 − 10 = ______
2 × 10 = ______
12 + 20 = ______
73 + 20 = ______
80 − 10 = ______
48 − 10 = ______
8 × 10 = ______
30 + 20 = ______
