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
30 + 10 = ______
47 + 10 = ______
69 − 10 = ______
43 − 10 = ______
71 + 10 = ______
7 × 10 = ______
6 × 10 = ______
60 − 10 = ______
50 − 10 = ______
29 − 10 = ______
84 + 20 = ______
52 + 20 = ______
45 + 20 = ______
51 + 20 = ______
69 + 20 = ______
84 − 10 = ______
11 + 20 = ______
65 − 10 = ______
1 × 10 = ______
49 + 10 = ______
