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
55 + 10 = ______
8 × 10 = ______
31 + 10 = ______
59 + 20 = ______
67 − 10 = ______
88 + 20 = ______
74 − 10 = ______
15 + 10 = ______
39 + 20 = ______
40 − 10 = ______
30 + 10 = ______
77 + 10 = ______
65 − 10 = ______
68 + 10 = ______
75 + 10 = ______
6 × 10 = ______
88 − 10 = ______
28 + 10 = ______
31 − 10 = ______
75 − 10 = ______
