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
64 + 10 = ______
39 − 10 = ______
7 × 10 = ______
64 + 20 = ______
3 × 10 = ______
53 − 10 = ______
80 + 10 = ______
40 + 20 = ______
64 − 10 = ______
87 − 10 = ______
38 − 10 = ______
45 + 20 = ______
48 + 10 = ______
8 × 10 = ______
42 + 10 = ______
31 + 20 = ______
46 + 20 = ______
71 − 10 = ______
63 + 20 = ______
62 + 20 = ______
