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
77 + 10 = ______
70 + 10 = ______
56 − 10 = ______
24 + 20 = ______
6 × 10 = ______
23 − 10 = ______
64 + 20 = ______
22 + 10 = ______
5 × 10 = ______
82 + 20 = ______
43 − 10 = ______
31 + 20 = ______
42 + 20 = ______
41 + 10 = ______
22 − 10 = ______
21 + 10 = ______
71 + 10 = ______
74 − 10 = ______
55 − 10 = ______
89 + 10 = ______
