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
1 × 10 = ______
52 + 10 = ______
82 + 20 = ______
66 + 20 = ______
48 + 20 = ______
75 − 10 = ______
53 + 20 = ______
49 + 10 = ______
37 + 20 = ______
27 + 10 = ______
54 + 20 = ______
24 + 20 = ______
50 − 10 = ______
21 + 10 = ______
36 + 10 = ______
45 − 10 = ______
31 + 10 = ______
40 − 10 = ______
73 − 10 = ______
24 − 10 = ______
