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
9 × 10 = ______
25 + 20 = ______
82 + 20 = ______
17 + 10 = ______
83 + 20 = ______
97 − 10 = ______
48 − 10 = ______
50 − 10 = ______
73 + 20 = ______
22 + 10 = ______
44 − 10 = ______
4 × 10 = ______
28 + 20 = ______
27 − 10 = ______
73 + 10 = ______
57 + 10 = ______
81 + 20 = ______
38 + 10 = ______
54 + 20 = ______
89 − 10 = ______
