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
5 × 10 = ______
44 + 20 = ______
70 + 10 = ______
39 + 10 = ______
3 × 10 = ______
76 − 10 = ______
38 + 20 = ______
78 − 10 = ______
46 + 10 = ______
34 − 10 = ______
77 + 10 = ______
83 + 10 = ______
40 + 20 = ______
33 − 10 = ______
2 × 10 = ______
27 + 20 = ______
45 − 10 = ______
87 − 10 = ______
52 + 10 = ______
42 + 20 = ______
