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
82 + 10 = ______
33 + 10 = ______
80 + 10 = ______
30 + 20 = ______
97 − 10 = ______
38 + 20 = ______
99 − 10 = ______
6 × 10 = ______
55 − 10 = ______
5 × 10 = ______
39 − 10 = ______
8 × 10 = ______
98 − 10 = ______
44 + 20 = ______
50 + 20 = ______
76 + 10 = ______
3 × 10 = ______
4 × 10 = ______
85 + 20 = ______
66 − 10 = ______
