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
41 + 20 = ______
64 + 20 = ______
1 × 10 = ______
59 + 20 = ______
45 − 10 = ______
61 + 20 = ______
50 − 10 = ______
57 − 10 = ______
6 × 10 = ______
4 × 10 = ______
23 − 10 = ______
8 × 10 = ______
46 − 10 = ______
12 + 20 = ______
14 + 10 = ______
87 + 20 = ______
9 × 10 = ______
3 × 10 = ______
84 + 10 = ______
78 + 20 = ______
