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
47 + 20 = ______
5 × 10 = ______
12 + 10 = ______
65 + 10 = ______
17 + 20 = ______
72 + 10 = ______
21 + 10 = ______
58 + 20 = ______
2 × 10 = ______
52 − 10 = ______
22 − 10 = ______
7 × 10 = ______
45 + 20 = ______
9 × 10 = ______
66 − 10 = ______
70 + 20 = ______
3 × 10 = ______
52 + 10 = ______
25 − 10 = ______
44 + 10 = ______
