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
6 × 10 = ______
22 + 20 = ______
3 × 10 = ______
2 × 10 = ______
18 + 20 = ______
30 − 10 = ______
33 − 10 = ______
41 + 10 = ______
68 + 10 = ______
35 − 10 = ______
7 × 10 = ______
28 + 10 = ______
36 − 10 = ______
4 × 10 = ______
53 + 10 = ______
1 × 10 = ______
27 + 10 = ______
83 + 10 = ______
12 + 20 = ______
80 + 20 = ______
