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
48 + 10 = ______
13 + 20 = ______
21 + 10 = ______
42 + 20 = ______
48 − 10 = ______
37 − 10 = ______
24 + 20 = ______
12 + 20 = ______
34 − 10 = ______
1 × 10 = ______
5 × 10 = ______
82 + 20 = ______
76 + 10 = ______
73 + 10 = ______
92 − 10 = ______
6 × 10 = ______
75 − 10 = ______
50 − 10 = ______
60 + 10 = ______
89 + 20 = ______
