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
87 − 10 = ______
19 + 20 = ______
27 − 10 = ______
65 − 10 = ______
66 − 10 = ______
9 × 10 = ______
59 + 10 = ______
68 + 10 = ______
58 − 10 = ______
69 − 10 = ______
6 × 10 = ______
1 × 10 = ______
33 + 20 = ______
55 + 10 = ______
72 − 10 = ______
82 + 10 = ______
2 × 10 = ______
70 + 20 = ______
90 − 10 = ______
5 × 10 = ______
