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
78 − 10 = ______
3 × 10 = ______
9 × 10 = ______
90 − 10 = ______
17 + 20 = ______
47 + 10 = ______
93 − 10 = ______
65 + 10 = ______
55 + 20 = ______
31 + 10 = ______
79 + 20 = ______
44 + 10 = ______
1 × 10 = ______
38 − 10 = ______
44 − 10 = ______
63 + 10 = ______
50 − 10 = ______
7 × 10 = ______
27 + 20 = ______
62 + 20 = ______
