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 = ______
67 + 20 = ______
75 − 10 = ______
53 + 20 = ______
7 × 10 = ______
55 − 10 = ______
27 − 10 = ______
22 + 10 = ______
9 × 10 = ______
8 × 10 = ______
61 + 20 = ______
1 × 10 = ______
87 + 10 = ______
80 + 20 = ______
36 + 10 = ______
42 + 20 = ______
89 + 20 = ______
4 × 10 = ______
43 + 20 = ______
74 + 20 = ______
