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
55 + 10 = ______
9 × 10 = ______
5 × 10 = ______
3 × 10 = ______
43 + 20 = ______
38 − 10 = ______
47 + 10 = ______
57 + 10 = ______
47 + 20 = ______
72 − 10 = ______
8 × 10 = ______
75 + 20 = ______
81 + 20 = ______
15 + 20 = ______
81 − 10 = ______
46 − 10 = ______
4 × 10 = ______
6 × 10 = ______
51 + 20 = ______
87 − 10 = ______
