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
3 × 10 = ______
78 + 10 = ______
43 + 10 = ______
7 × 10 = ______
29 − 10 = ______
72 + 20 = ______
8 × 10 = ______
70 − 10 = ______
21 − 10 = ______
64 + 20 = ______
6 × 10 = ______
34 + 20 = ______
17 + 10 = ______
42 + 10 = ______
67 + 10 = ______
54 − 10 = ______
88 + 20 = ______
48 + 20 = ______
71 − 10 = ______
63 − 10 = ______
