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
33 − 10 = ______
71 + 20 = ______
17 + 10 = ______
1 × 10 = ______
3 × 10 = ______
61 − 10 = ______
22 + 20 = ______
45 + 10 = ______
36 + 20 = ______
32 + 10 = ______
52 − 10 = ______
13 + 10 = ______
67 + 10 = ______
47 − 10 = ______
46 + 20 = ______
88 − 10 = ______
28 − 10 = ______
57 − 10 = ______
30 − 10 = ______
6 × 10 = ______
