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
79 + 20 = ______
38 + 10 = ______
87 − 10 = ______
74 + 10 = ______
6 × 10 = ______
17 + 20 = ______
25 − 10 = ______
62 + 20 = ______
1 × 10 = ______
37 − 10 = ______
97 − 10 = ______
2 × 10 = ______
90 − 10 = ______
43 + 20 = ______
43 + 10 = ______
7 × 10 = ______
68 − 10 = ______
56 + 10 = ______
50 + 20 = ______
87 + 10 = ______
