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
82 + 20 = ______
82 − 10 = ______
24 + 20 = ______
90 − 10 = ______
75 + 10 = ______
7 × 10 = ______
25 − 10 = ______
85 − 10 = ______
3 × 10 = ______
29 + 10 = ______
13 + 20 = ______
6 × 10 = ______
1 × 10 = ______
34 − 10 = ______
14 + 20 = ______
53 + 10 = ______
22 + 20 = ______
20 + 20 = ______
87 + 10 = ______
50 + 20 = ______
