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
45 + 10 = ______
2 × 10 = ______
48 + 20 = ______
27 + 20 = ______
9 × 10 = ______
8 × 10 = ______
75 − 10 = ______
44 + 10 = ______
59 + 20 = ______
77 − 10 = ______
97 − 10 = ______
86 − 10 = ______
43 − 10 = ______
30 + 20 = ______
27 − 10 = ______
32 + 10 = ______
1 × 10 = ______
87 + 10 = ______
61 − 10 = ______
82 − 10 = ______
