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
57 + 20 = ______
71 + 10 = ______
9 × 10 = ______
87 − 10 = ______
61 − 10 = ______
8 × 10 = ______
39 + 20 = ______
63 + 10 = ______
1 × 10 = ______
23 + 10 = ______
75 − 10 = ______
71 + 20 = ______
72 − 10 = ______
46 − 10 = ______
29 − 10 = ______
48 + 20 = ______
4 × 10 = ______
71 − 10 = ______
43 − 10 = ______
41 + 10 = ______
