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
85 + 20 = ______
1 × 10 = ______
50 − 10 = ______
19 + 10 = ______
9 × 10 = ______
57 − 10 = ______
35 − 10 = ______
78 + 10 = ______
54 + 10 = ______
3 × 10 = ______
8 × 10 = ______
37 + 20 = ______
2 × 10 = ______
62 + 20 = ______
44 − 10 = ______
27 + 10 = ______
77 + 10 = ______
75 + 10 = ______
45 + 10 = ______
73 + 20 = ______
