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
5 × 10 = ______
73 − 10 = ______
85 − 10 = ______
57 + 20 = ______
27 − 10 = ______
7 × 10 = ______
76 + 20 = ______
56 − 10 = ______
21 + 20 = ______
6 × 10 = ______
31 + 10 = ______
75 + 10 = ______
78 − 10 = ______
17 + 20 = ______
37 + 20 = ______
3 × 10 = ______
59 + 20 = ______
30 + 10 = ______
83 − 10 = ______
22 − 10 = ______
