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
70 + 10 = ______
2 × 10 = ______
79 + 10 = ______
32 + 20 = ______
45 − 10 = ______
67 + 20 = ______
47 + 20 = ______
3 × 10 = ______
41 − 10 = ______
23 + 10 = ______
51 − 10 = ______
7 × 10 = ______
35 − 10 = ______
82 − 10 = ______
53 + 10 = ______
33 − 10 = ______
20 + 20 = ______
1 × 10 = ______
36 + 10 = ______
66 + 20 = ______
