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
3 × 10 = ______
2 × 10 = ______
61 + 10 = ______
76 − 10 = ______
88 + 20 = ______
15 + 10 = ______
1 × 10 = ______
82 + 20 = ______
54 + 10 = ______
21 − 10 = ______
36 + 20 = ______
60 + 20 = ______
7 × 10 = ______
39 + 10 = ______
5 × 10 = ______
43 + 10 = ______
54 − 10 = ______
50 + 20 = ______
19 + 20 = ______
31 − 10 = ______
