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
87 − 10 = ______
45 + 20 = ______
72 − 10 = ______
83 + 20 = ______
89 + 10 = ______
6 × 10 = ______
25 + 10 = ______
83 − 10 = ______
37 + 10 = ______
32 − 10 = ______
68 + 20 = ______
22 + 20 = ______
36 + 20 = ______
73 + 10 = ______
49 + 20 = ______
71 + 10 = ______
1 × 10 = ______
27 + 10 = ______
40 − 10 = ______
78 − 10 = ______
