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
2 × 10 = ______
39 + 10 = ______
6 × 10 = ______
29 + 20 = ______
63 − 10 = ______
38 + 20 = ______
64 + 10 = ______
63 + 20 = ______
56 + 20 = ______
74 + 20 = ______
78 + 10 = ______
21 − 10 = ______
89 − 10 = ______
5 × 10 = ______
32 + 20 = ______
90 − 10 = ______
7 × 10 = ______
8 × 10 = ______
43 + 20 = ______
19 + 10 = ______
