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
56 + 20 = ______
12 + 10 = ______
1 × 10 = ______
5 × 10 = ______
4 × 10 = ______
7 × 10 = ______
8 × 10 = ______
41 − 10 = ______
25 + 10 = ______
37 − 10 = ______
62 + 20 = ______
72 + 20 = ______
80 − 10 = ______
57 + 20 = ______
32 − 10 = ______
42 − 10 = ______
2 × 10 = ______
55 + 20 = ______
37 + 10 = ______
60 − 10 = ______
