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
77 − 10 = ______
3 × 10 = ______
79 + 10 = ______
66 − 10 = ______
1 × 10 = ______
36 + 10 = ______
59 + 20 = ______
28 + 20 = ______
9 × 10 = ______
7 × 10 = ______
6 × 10 = ______
73 + 10 = ______
24 + 10 = ______
70 + 20 = ______
83 − 10 = ______
15 + 10 = ______
82 + 10 = ______
72 − 10 = ______
38 + 20 = ______
62 − 10 = ______
