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
80 − 10 = ______
55 + 20 = ______
77 − 10 = ______
80 + 10 = ______
79 − 10 = ______
28 + 20 = ______
16 + 20 = ______
39 − 10 = ______
82 + 20 = ______
8 × 10 = ______
52 − 10 = ______
73 + 10 = ______
77 + 20 = ______
22 + 20 = ______
1 × 10 = ______
9 × 10 = ______
32 + 10 = ______
2 × 10 = ______
55 − 10 = ______
44 − 10 = ______
