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 = ______
99 − 10 = ______
5 × 10 = ______
96 − 10 = ______
83 + 20 = ______
7 × 10 = ______
53 + 10 = ______
21 − 10 = ______
6 × 10 = ______
66 − 10 = ______
47 − 10 = ______
89 + 20 = ______
74 + 20 = ______
9 × 10 = ______
8 × 10 = ______
62 + 20 = ______
84 + 20 = ______
72 + 20 = ______
3 × 10 = ______
54 + 20 = ______
