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
99 − 10 = ______
2 × 10 = ______
28 + 10 = ______
4 × 10 = ______
6 × 10 = ______
5 × 10 = ______
85 − 10 = ______
11 + 10 = ______
60 − 10 = ______
32 + 10 = ______
48 + 20 = ______
82 + 20 = ______
44 + 20 = ______
82 − 10 = ______
3 × 10 = ______
98 − 10 = ______
80 + 20 = ______
52 + 10 = ______
45 + 20 = ______
81 − 10 = ______
