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
17 + 20 = ______
6 × 10 = ______
62 − 10 = ______
40 + 20 = ______
23 − 10 = ______
96 − 10 = ______
2 × 10 = ______
79 + 10 = ______
67 − 10 = ______
38 − 10 = ______
27 + 20 = ______
48 + 20 = ______
99 − 10 = ______
81 + 10 = ______
24 − 10 = ______
25 + 10 = ______
38 + 10 = ______
3 × 10 = ______
59 − 10 = ______
43 + 10 = ______
