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
32 + 20 = ______
15 + 20 = ______
1 × 10 = ______
2 × 10 = ______
36 − 10 = ______
66 − 10 = ______
9 × 10 = ______
29 + 20 = ______
91 − 10 = ______
72 + 20 = ______
3 × 10 = ______
4 × 10 = ______
26 + 10 = ______
11 + 20 = ______
8 × 10 = ______
25 + 10 = ______
18 + 10 = ______
7 × 10 = ______
84 − 10 = ______
75 + 10 = ______
