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
46 + 20 = ______
9 × 10 = ______
64 − 10 = ______
2 × 10 = ______
5 × 10 = ______
87 − 10 = ______
63 − 10 = ______
81 − 10 = ______
73 + 20 = ______
83 − 10 = ______
68 + 10 = ______
18 + 20 = ______
38 − 10 = ______
77 + 10 = ______
72 + 20 = ______
23 − 10 = ______
23 + 20 = ______
11 + 20 = ______
22 + 20 = ______
8 × 10 = ______
