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 = ______
4 × 10 = ______
71 + 10 = ______
66 − 10 = ______
9 × 10 = ______
38 + 10 = ______
13 + 10 = ______
32 + 20 = ______
95 − 10 = ______
74 + 20 = ______
58 + 20 = ______
37 − 10 = ______
43 + 20 = ______
57 − 10 = ______
67 − 10 = ______
75 − 10 = ______
1 × 10 = ______
29 + 20 = ______
37 + 20 = ______
59 + 20 = ______
