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
71 − 10 = ______
55 + 10 = ______
19 + 20 = ______
47 − 10 = ______
38 + 10 = ______
8 × 10 = ______
1 × 10 = ______
39 + 20 = ______
75 − 10 = ______
42 + 10 = ______
79 − 10 = ______
79 + 20 = ______
82 + 20 = ______
6 × 10 = ______
54 − 10 = ______
67 + 20 = ______
87 − 10 = ______
9 × 10 = ______
45 − 10 = ______
47 + 10 = ______
