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 = ______
8 × 10 = ______
27 + 10 = ______
46 − 10 = ______
50 + 20 = ______
3 × 10 = ______
61 + 10 = ______
19 + 20 = ______
90 − 10 = ______
1 × 10 = ______
4 × 10 = ______
5 × 10 = ______
87 + 10 = ______
55 + 20 = ______
77 + 20 = ______
38 + 20 = ______
39 + 10 = ______
99 − 10 = ______
84 + 20 = ______
92 − 10 = ______
