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
7 × 10 = ______
84 + 10 = ______
57 − 10 = ______
1 × 10 = ______
65 + 10 = ______
28 − 10 = ______
38 + 10 = ______
57 + 20 = ______
30 + 20 = ______
78 + 20 = ______
59 − 10 = ______
5 × 10 = ______
90 − 10 = ______
39 − 10 = ______
40 − 10 = ______
46 + 10 = ______
24 − 10 = ______
22 + 20 = ______
39 + 20 = ______
19 + 10 = ______
