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
60 + 20 = ______
89 + 20 = ______
38 + 10 = ______
89 − 10 = ______
32 + 10 = ______
71 − 10 = ______
25 + 20 = ______
1 × 10 = ______
11 + 20 = ______
8 × 10 = ______
73 + 10 = ______
4 × 10 = ______
37 + 20 = ______
79 + 10 = ______
28 + 10 = ______
5 × 10 = ______
58 − 10 = ______
6 × 10 = ______
91 − 10 = ______
51 + 20 = ______
