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
18 + 20 = ______
6 × 10 = ______
45 + 20 = ______
25 − 10 = ______
31 − 10 = ______
43 + 20 = ______
4 × 10 = ______
8 × 10 = ______
9 × 10 = ______
28 − 10 = ______
25 + 10 = ______
43 − 10 = ______
87 + 20 = ______
49 − 10 = ______
65 + 10 = ______
82 − 10 = ______
2 × 10 = ______
33 + 20 = ______
75 + 10 = ______
15 + 20 = ______
