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
30 + 20 = ______
25 − 10 = ______
8 × 10 = ______
31 + 20 = ______
34 − 10 = ______
34 + 20 = ______
71 + 10 = ______
5 × 10 = ______
31 − 10 = ______
9 × 10 = ______
3 × 10 = ______
12 + 10 = ______
43 + 20 = ______
83 − 10 = ______
4 × 10 = ______
53 + 20 = ______
1 × 10 = ______
17 + 20 = ______
23 − 10 = ______
32 + 10 = ______
