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
85 + 20 = ______
38 + 10 = ______
27 + 10 = ______
51 + 10 = ______
68 + 20 = ______
84 − 10 = ______
36 − 10 = ______
5 × 10 = ______
6 × 10 = ______
20 + 20 = ______
87 − 10 = ______
9 × 10 = ______
67 + 10 = ______
48 + 20 = ______
45 − 10 = ______
21 + 20 = ______
61 + 10 = ______
41 − 10 = ______
11 + 10 = ______
1 × 10 = ______
