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
9 × 10 = ______
52 + 10 = ______
2 × 10 = ______
71 − 10 = ______
48 + 20 = ______
6 × 10 = ______
76 − 10 = ______
89 + 10 = ______
74 − 10 = ______
27 − 10 = ______
59 + 20 = ______
78 + 10 = ______
3 × 10 = ______
83 + 10 = ______
5 × 10 = ______
81 + 10 = ______
84 − 10 = ______
70 + 20 = ______
42 − 10 = ______
8 × 10 = ______
