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
1 × 10 = ______
21 + 20 = ______
61 + 20 = ______
3 × 10 = ______
7 × 10 = ______
31 − 10 = ______
73 + 20 = ______
16 + 10 = ______
44 + 10 = ______
86 − 10 = ______
88 + 20 = ______
8 × 10 = ______
88 − 10 = ______
59 + 10 = ______
4 × 10 = ______
25 + 20 = ______
82 − 10 = ______
28 − 10 = ______
62 + 10 = ______
74 + 10 = ______
