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 = ______
67 + 20 = ______
78 − 10 = ______
88 + 10 = ______
41 + 10 = ______
66 + 20 = ______
88 − 10 = ______
66 − 10 = ______
7 × 10 = ______
5 × 10 = ______
49 − 10 = ______
34 + 10 = ______
99 − 10 = ______
46 + 10 = ______
78 + 20 = ______
38 − 10 = ______
8 × 10 = ______
18 + 10 = ______
19 + 10 = ______
1 × 10 = ______
