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
14 + 20 = ______
2 × 10 = ______
8 × 10 = ______
42 − 10 = ______
29 + 10 = ______
37 + 20 = ______
54 − 10 = ______
82 − 10 = ______
12 + 20 = ______
79 + 10 = ______
71 − 10 = ______
64 + 10 = ______
5 × 10 = ______
1 × 10 = ______
46 + 20 = ______
44 − 10 = ______
32 + 10 = ______
61 + 20 = ______
62 + 10 = ______
72 + 10 = ______
