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
76 + 10 = ______
6 × 10 = ______
19 + 10 = ______
3 × 10 = ______
30 + 10 = ______
39 + 20 = ______
79 − 10 = ______
69 + 20 = ______
2 × 10 = ______
87 + 20 = ______
38 + 10 = ______
47 − 10 = ______
73 + 20 = ______
9 × 10 = ______
1 × 10 = ______
30 + 20 = ______
50 − 10 = ______
36 − 10 = ______
7 × 10 = ______
57 + 20 = ______
