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
73 + 20 = ______
14 + 10 = ______
9 × 10 = ______
8 × 10 = ______
4 × 10 = ______
28 − 10 = ______
81 − 10 = ______
83 + 20 = ______
39 − 10 = ______
79 + 20 = ______
21 + 20 = ______
53 − 10 = ______
60 + 20 = ______
20 + 10 = ______
48 − 10 = ______
83 + 10 = ______
1 × 10 = ______
27 + 10 = ______
30 + 20 = ______
41 + 10 = ______
