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
49 + 20 = ______
15 + 10 = ______
1 × 10 = ______
27 + 10 = ______
60 + 10 = ______
68 + 10 = ______
85 + 20 = ______
56 + 20 = ______
73 − 10 = ______
16 + 10 = ______
47 − 10 = ______
21 − 10 = ______
45 + 10 = ______
36 + 20 = ______
43 − 10 = ______
65 − 10 = ______
9 × 10 = ______
50 + 10 = ______
44 − 10 = ______
79 − 10 = ______
