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 + 10 = ______
35 + 10 = ______
99 − 10 = ______
41 − 10 = ______
36 + 20 = ______
72 + 10 = ______
28 + 10 = ______
76 − 10 = ______
7 × 10 = ______
5 × 10 = ______
68 + 10 = ______
25 + 10 = ______
20 + 10 = ______
21 − 10 = ______
43 + 20 = ______
33 + 10 = ______
81 + 10 = ______
80 + 20 = ______
47 − 10 = ______
48 − 10 = ______
