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
28 − 10 = ______
29 + 20 = ______
45 + 10 = ______
57 − 10 = ______
67 − 10 = ______
6 × 10 = ______
25 + 20 = ______
70 − 10 = ______
66 + 10 = ______
3 × 10 = ______
23 − 10 = ______
72 + 10 = ______
40 − 10 = ______
51 − 10 = ______
38 + 10 = ______
50 + 10 = ______
48 + 10 = ______
70 + 10 = ______
2 × 10 = ______
62 − 10 = ______
