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
68 + 10 = ______
78 − 10 = ______
35 − 10 = ______
56 + 20 = ______
45 − 10 = ______
13 + 10 = ______
61 + 20 = ______
59 − 10 = ______
53 − 10 = ______
76 + 20 = ______
82 + 20 = ______
43 − 10 = ______
8 × 10 = ______
4 × 10 = ______
87 + 20 = ______
52 + 20 = ______
3 × 10 = ______
11 + 20 = ______
30 + 20 = ______
77 + 10 = ______
