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 = ______
72 + 20 = ______
63 + 20 = ______
59 + 20 = ______
97 − 10 = ______
85 + 20 = ______
94 − 10 = ______
53 + 20 = ______
67 + 20 = ______
84 + 20 = ______
5 × 10 = ______
44 + 20 = ______
44 − 10 = ______
2 × 10 = ______
52 − 10 = ______
30 − 10 = ______
38 − 10 = ______
26 − 10 = ______
83 − 10 = ______
82 + 10 = ______
