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
2 × 10 = ______
3 × 10 = ______
1 × 10 = ______
48 − 10 = ______
9 × 10 = ______
83 + 10 = ______
13 + 10 = ______
38 + 20 = ______
74 − 10 = ______
79 − 10 = ______
73 + 20 = ______
54 + 20 = ______
83 − 10 = ______
45 + 20 = ______
29 + 10 = ______
6 × 10 = ______
50 + 20 = ______
66 + 20 = ______
36 + 20 = ______
74 + 10 = ______
