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
80 + 10 = ______
70 + 20 = ______
48 + 10 = ______
68 − 10 = ______
5 × 10 = ______
28 + 20 = ______
35 + 10 = ______
76 − 10 = ______
30 + 10 = ______
8 × 10 = ______
27 + 10 = ______
43 − 10 = ______
39 − 10 = ______
82 − 10 = ______
81 + 10 = ______
11 + 10 = ______
79 + 20 = ______
51 + 10 = ______
1 × 10 = ______
53 + 10 = ______
