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 + 20 = ______
13 + 10 = ______
55 + 10 = ______
64 + 20 = ______
54 + 10 = ______
63 − 10 = ______
3 × 10 = ______
9 × 10 = ______
21 + 20 = ______
87 + 10 = ______
68 − 10 = ______
92 − 10 = ______
75 + 10 = ______
7 × 10 = ______
4 × 10 = ______
52 + 10 = ______
84 − 10 = ______
87 − 10 = ______
79 + 10 = ______
82 + 10 = ______
