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
5 × 10 = ______
64 + 20 = ______
3 × 10 = ______
71 + 10 = ______
21 + 20 = ______
20 + 10 = ______
26 + 10 = ______
8 × 10 = ______
35 + 10 = ______
57 − 10 = ______
67 − 10 = ______
9 × 10 = ______
35 − 10 = ______
1 × 10 = ______
88 + 10 = ______
73 + 10 = ______
91 − 10 = ______
17 + 10 = ______
35 + 20 = ______
49 + 20 = ______
