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
61 − 10 = ______
23 + 10 = ______
55 − 10 = ______
43 − 10 = ______
33 + 10 = ______
80 + 20 = ______
6 × 10 = ______
3 × 10 = ______
9 × 10 = ______
25 − 10 = ______
86 + 10 = ______
50 − 10 = ______
47 − 10 = ______
43 + 20 = ______
21 + 20 = ______
29 − 10 = ______
1 × 10 = ______
39 − 10 = ______
38 + 10 = ______
11 + 20 = ______
