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
60 + 10 = ______
45 − 10 = ______
71 − 10 = ______
2 × 10 = ______
5 × 10 = ______
1 × 10 = ______
54 + 10 = ______
78 + 20 = ______
75 + 20 = ______
83 + 20 = ______
53 + 10 = ______
70 − 10 = ______
86 − 10 = ______
6 × 10 = ______
63 − 10 = ______
4 × 10 = ______
48 + 10 = ______
27 + 20 = ______
67 + 20 = ______
29 − 10 = ______
