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
6 × 10 = ______
9 × 10 = ______
28 + 20 = ______
87 − 10 = ______
59 + 20 = ______
5 × 10 = ______
54 + 20 = ______
69 − 10 = ______
45 + 20 = ______
74 + 10 = ______
31 + 10 = ______
15 + 20 = ______
21 + 10 = ______
83 − 10 = ______
81 − 10 = ______
36 − 10 = ______
82 + 20 = ______
43 + 20 = ______
80 + 10 = ______
52 + 20 = ______
