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
71 + 10 = ______
1 × 10 = ______
30 + 20 = ______
86 − 10 = ______
21 − 10 = ______
82 + 10 = ______
36 + 10 = ______
33 + 20 = ______
2 × 10 = ______
60 + 10 = ______
26 − 10 = ______
68 + 10 = ______
3 × 10 = ______
16 + 20 = ______
62 − 10 = ______
12 + 20 = ______
7 × 10 = ______
60 − 10 = ______
35 + 10 = ______
20 + 20 = ______
