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
33 + 20 = ______
65 + 20 = ______
1 × 10 = ______
82 − 10 = ______
43 + 10 = ______
77 − 10 = ______
18 + 10 = ______
25 + 20 = ______
49 + 10 = ______
6 × 10 = ______
44 − 10 = ______
86 + 10 = ______
61 + 20 = ______
3 × 10 = ______
23 + 10 = ______
63 + 10 = ______
59 + 20 = ______
29 − 10 = ______
92 − 10 = ______
85 + 10 = ______
