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
65 + 20 = ______
55 − 10 = ______
65 + 10 = ______
5 × 10 = ______
31 + 20 = ______
87 + 10 = ______
8 × 10 = ______
13 + 10 = ______
28 + 10 = ______
66 + 20 = ______
48 + 10 = ______
46 + 10 = ______
99 − 10 = ______
49 + 20 = ______
42 − 10 = ______
60 − 10 = ______
82 − 10 = ______
86 + 20 = ______
30 + 20 = ______
79 − 10 = ______
