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
36 + 20 = ______
46 − 10 = ______
38 − 10 = ______
87 + 10 = ______
37 − 10 = ______
81 + 10 = ______
23 + 20 = ______
5 × 10 = ______
71 − 10 = ______
67 − 10 = ______
17 + 10 = ______
7 × 10 = ______
28 + 20 = ______
37 + 10 = ______
76 + 20 = ______
1 × 10 = ______
57 + 20 = ______
52 + 20 = ______
83 − 10 = ______
8 × 10 = ______
