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 = ______
88 + 20 = ______
51 + 20 = ______
7 × 10 = ______
2 × 10 = ______
59 − 10 = ______
91 − 10 = ______
75 + 20 = ______
29 − 10 = ______
38 − 10 = ______
90 − 10 = ______
45 − 10 = ______
20 + 10 = ______
9 × 10 = ______
3 × 10 = ______
5 × 10 = ______
38 + 20 = ______
11 + 10 = ______
82 + 10 = ______
21 − 10 = ______
