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
67 + 20 = ______
35 + 10 = ______
13 + 20 = ______
45 + 20 = ______
3 × 10 = ______
48 − 10 = ______
68 + 20 = ______
7 × 10 = ______
59 − 10 = ______
53 + 10 = ______
84 − 10 = ______
84 + 20 = ______
73 − 10 = ______
25 + 10 = ______
44 − 10 = ______
29 − 10 = ______
87 − 10 = ______
12 + 10 = ______
18 + 10 = ______
29 + 10 = ______
