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
88 + 20 = ______
6 × 10 = ______
49 + 10 = ______
3 × 10 = ______
32 − 10 = ______
66 − 10 = ______
89 + 20 = ______
71 + 20 = ______
83 + 10 = ______
74 + 20 = ______
80 + 20 = ______
79 + 20 = ______
38 + 20 = ______
2 × 10 = ______
84 + 10 = ______
5 × 10 = ______
8 × 10 = ______
20 + 10 = ______
62 − 10 = ______
95 − 10 = ______
