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
51 + 20 = ______
3 × 10 = ______
7 × 10 = ______
28 + 10 = ______
2 × 10 = ______
39 + 20 = ______
29 − 10 = ______
36 + 10 = ______
53 − 10 = ______
1 × 10 = ______
88 − 10 = ______
22 + 10 = ______
71 + 20 = ______
27 − 10 = ______
31 + 10 = ______
64 + 10 = ______
8 × 10 = ______
24 − 10 = ______
55 − 10 = ______
21 + 10 = ______
