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
34 + 20 = ______
1 × 10 = ______
8 × 10 = ______
75 + 20 = ______
27 + 10 = ______
21 − 10 = ______
19 + 10 = ______
11 + 20 = ______
6 × 10 = ______
34 − 10 = ______
67 − 10 = ______
30 + 10 = ______
2 × 10 = ______
58 + 10 = ______
73 − 10 = ______
45 + 20 = ______
48 + 10 = ______
78 − 10 = ______
4 × 10 = ______
85 + 20 = ______
