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
82 + 10 = ______
38 + 20 = ______
70 + 10 = ______
2 × 10 = ______
52 + 20 = ______
28 + 20 = ______
84 + 10 = ______
9 × 10 = ______
7 × 10 = ______
68 − 10 = ______
5 × 10 = ______
6 × 10 = ______
53 − 10 = ______
34 + 10 = ______
50 − 10 = ______
84 + 20 = ______
75 + 20 = ______
40 + 20 = ______
78 − 10 = ______
61 + 10 = ______
