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
90 − 10 = ______
64 − 10 = ______
99 − 10 = ______
18 + 20 = ______
65 + 10 = ______
56 + 10 = ______
39 − 10 = ______
74 − 10 = ______
75 + 10 = ______
53 + 10 = ______
15 + 20 = ______
51 + 20 = ______
55 + 10 = ______
71 + 20 = ______
41 + 20 = ______
24 − 10 = ______
38 + 20 = ______
4 × 10 = ______
75 − 10 = ______
33 + 10 = ______
