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
29 + 10 = ______
23 + 20 = ______
18 + 20 = ______
25 + 20 = ______
82 − 10 = ______
43 + 20 = ______
20 + 20 = ______
38 + 10 = ______
72 − 10 = ______
26 − 10 = ______
6 × 10 = ______
75 − 10 = ______
76 − 10 = ______
1 × 10 = ______
33 + 10 = ______
67 + 20 = ______
55 − 10 = ______
64 − 10 = ______
83 + 10 = ______
34 + 20 = ______
