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
24 + 10 = ______
66 + 10 = ______
21 + 20 = ______
42 − 10 = ______
81 + 20 = ______
95 − 10 = ______
2 × 10 = ______
1 × 10 = ______
94 − 10 = ______
40 + 10 = ______
65 + 10 = ______
71 − 10 = ______
88 − 10 = ______
50 + 10 = ______
21 − 10 = ______
18 + 20 = ______
82 + 10 = ______
31 + 20 = ______
14 + 20 = ______
44 + 10 = ______
