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
17 + 10 = ______
1 × 10 = ______
84 − 10 = ______
52 + 10 = ______
82 + 10 = ______
4 × 10 = ______
71 + 10 = ______
99 − 10 = ______
8 × 10 = ______
15 + 20 = ______
9 × 10 = ______
6 × 10 = ______
30 − 10 = ______
25 + 20 = ______
44 + 10 = ______
95 − 10 = ______
74 + 20 = ______
14 + 20 = ______
38 + 10 = ______
11 + 20 = ______
