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
8 × 10 = ______
61 − 10 = ______
25 + 10 = ______
81 + 10 = ______
31 − 10 = ______
72 − 10 = ______
83 + 20 = ______
71 + 10 = ______
20 + 20 = ______
5 × 10 = ______
64 + 10 = ______
88 + 10 = ______
9 × 10 = ______
89 − 10 = ______
77 − 10 = ______
70 + 10 = ______
64 − 10 = ______
2 × 10 = ______
16 + 20 = ______
38 + 20 = ______
