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
3 × 10 = ______
1 × 10 = ______
77 + 20 = ______
56 − 10 = ______
41 + 20 = ______
9 × 10 = ______
32 − 10 = ______
21 − 10 = ______
87 − 10 = ______
25 − 10 = ______
83 + 10 = ______
71 + 10 = ______
47 + 20 = ______
35 + 20 = ______
95 − 10 = ______
4 × 10 = ______
36 − 10 = ______
79 + 20 = ______
43 − 10 = ______
38 + 20 = ______
