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 + 10 = ______
58 + 20 = ______
72 + 20 = ______
8 × 10 = ______
39 + 10 = ______
27 − 10 = ______
23 − 10 = ______
95 − 10 = ______
2 × 10 = ______
9 × 10 = ______
26 + 10 = ______
21 + 20 = ______
28 − 10 = ______
71 − 10 = ______
74 − 10 = ______
67 − 10 = ______
83 + 20 = ______
16 + 20 = ______
55 − 10 = ______
6 × 10 = ______
