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
75 + 20 = ______
8 × 10 = ______
53 − 10 = ______
5 × 10 = ______
25 + 20 = ______
14 + 20 = ______
33 − 10 = ______
73 + 10 = ______
68 + 10 = ______
54 + 10 = ______
60 + 20 = ______
43 + 20 = ______
86 + 20 = ______
35 + 20 = ______
3 × 10 = ______
1 × 10 = ______
21 + 20 = ______
87 − 10 = ______
40 + 20 = ______
23 − 10 = ______
