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
4 × 10 = ______
3 × 10 = ______
9 × 10 = ______
87 + 20 = ______
50 − 10 = ______
56 − 10 = ______
46 + 20 = ______
57 + 10 = ______
38 + 10 = ______
8 × 10 = ______
71 + 20 = ______
62 − 10 = ______
59 − 10 = ______
5 × 10 = ______
32 + 20 = ______
22 − 10 = ______
21 − 10 = ______
25 − 10 = ______
26 + 10 = ______
47 + 20 = ______
