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
81 + 10 = ______
5 × 10 = ______
1 × 10 = ______
32 − 10 = ______
51 − 10 = ______
79 + 20 = ______
57 + 20 = ______
66 + 20 = ______
35 + 20 = ______
28 + 20 = ______
19 + 10 = ______
26 − 10 = ______
89 − 10 = ______
7 × 10 = ______
21 + 10 = ______
11 + 10 = ______
46 + 20 = ______
67 + 20 = ______
82 − 10 = ______
64 − 10 = ______
