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
39 + 10 = ______
1 × 10 = ______
80 + 10 = ______
2 × 10 = ______
30 − 10 = ______
35 + 10 = ______
33 − 10 = ______
77 + 20 = ______
73 + 10 = ______
28 − 10 = ______
47 + 20 = ______
75 + 10 = ______
78 + 10 = ______
51 − 10 = ______
18 + 20 = ______
47 + 10 = ______
67 − 10 = ______
38 + 20 = ______
87 − 10 = ______
58 − 10 = ______
