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
76 + 20 = ______
7 × 10 = ______
98 − 10 = ______
17 + 20 = ______
2 × 10 = ______
61 − 10 = ______
39 + 10 = ______
9 × 10 = ______
28 + 20 = ______
84 + 20 = ______
66 − 10 = ______
21 + 10 = ______
77 − 10 = ______
40 + 20 = ______
1 × 10 = ______
11 + 20 = ______
4 × 10 = ______
3 × 10 = ______
84 − 10 = ______
27 + 10 = ______
