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
63 + 20 = ______
80 + 10 = ______
94 − 10 = ______
70 − 10 = ______
1 × 10 = ______
83 − 10 = ______
82 + 10 = ______
37 − 10 = ______
8 × 10 = ______
4 × 10 = ______
16 + 20 = ______
21 − 10 = ______
18 + 20 = ______
34 − 10 = ______
39 + 10 = ______
56 + 20 = ______
22 + 20 = ______
56 + 10 = ______
53 + 10 = ______
23 + 10 = ______
