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
18 + 20 = ______
45 − 10 = ______
11 + 10 = ______
36 − 10 = ______
30 + 20 = ______
77 + 20 = ______
4 × 10 = ______
37 − 10 = ______
36 + 10 = ______
61 + 10 = ______
3 × 10 = ______
35 + 20 = ______
65 − 10 = ______
2 × 10 = ______
76 + 10 = ______
21 − 10 = ______
83 − 10 = ______
74 + 20 = ______
9 × 10 = ______
18 + 10 = ______
