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
2 × 10 = ______
99 − 10 = ______
5 × 10 = ______
87 + 20 = ______
4 × 10 = ______
60 − 10 = ______
70 − 10 = ______
9 × 10 = ______
37 − 10 = ______
65 + 20 = ______
50 + 10 = ______
50 − 10 = ______
11 + 20 = ______
82 − 10 = ______
83 + 20 = ______
3 × 10 = ______
60 + 20 = ______
79 − 10 = ______
74 − 10 = ______
6 × 10 = ______
