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 = ______
30 + 10 = ______
19 + 10 = ______
58 − 10 = ______
20 + 10 = ______
32 + 10 = ______
8 × 10 = ______
2 × 10 = ______
42 − 10 = ______
31 + 20 = ______
79 + 20 = ______
50 − 10 = ______
57 + 10 = ______
24 + 20 = ______
13 + 20 = ______
21 + 20 = ______
87 − 10 = ______
68 − 10 = ______
18 + 20 = ______
91 − 10 = ______
