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 = ______
67 + 10 = ______
74 + 20 = ______
83 − 10 = ______
46 + 20 = ______
35 − 10 = ______
40 + 20 = ______
71 + 20 = ______
82 + 10 = ______
68 − 10 = ______
25 + 10 = ______
27 + 10 = ______
94 − 10 = ______
12 + 10 = ______
1 × 10 = ______
84 + 10 = ______
2 × 10 = ______
18 + 10 = ______
38 − 10 = ______
73 + 20 = ______
