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
25 + 20 = ______
50 + 10 = ______
9 × 10 = ______
4 × 10 = ______
91 − 10 = ______
43 − 10 = ______
2 × 10 = ______
5 × 10 = ______
24 + 20 = ______
72 − 10 = ______
40 + 20 = ______
34 + 10 = ______
82 + 10 = ______
79 + 20 = ______
38 − 10 = ______
61 − 10 = ______
87 + 10 = ______
42 − 10 = ______
85 + 10 = ______
31 + 20 = ______
