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
9 × 10 = ______
25 + 10 = ______
13 + 10 = ______
41 − 10 = ______
42 + 10 = ______
66 + 20 = ______
73 + 20 = ______
27 + 10 = ______
65 + 20 = ______
1 × 10 = ______
5 × 10 = ______
82 + 10 = ______
32 − 10 = ______
4 × 10 = ______
86 + 10 = ______
59 − 10 = ______
18 + 20 = ______
44 − 10 = ______
11 + 20 = ______
80 − 10 = ______
