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
1 × 10 = ______
82 − 10 = ______
25 + 10 = ______
18 + 20 = ______
52 + 10 = ______
99 − 10 = ______
21 − 10 = ______
23 + 10 = ______
85 + 10 = ______
22 + 10 = ______
3 × 10 = ______
21 + 20 = ______
83 − 10 = ______
57 − 10 = ______
48 − 10 = ______
94 − 10 = ______
31 − 10 = ______
77 − 10 = ______
78 + 10 = ______
69 + 10 = ______
