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
82 + 20 = ______
2 × 10 = ______
49 + 20 = ______
18 + 20 = ______
28 − 10 = ______
20 + 10 = ______
57 + 10 = ______
48 − 10 = ______
89 − 10 = ______
44 + 10 = ______
82 + 10 = ______
85 + 20 = ______
67 + 20 = ______
57 + 20 = ______
1 × 10 = ______
86 + 10 = ______
58 − 10 = ______
32 − 10 = ______
80 − 10 = ______
84 − 10 = ______
