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
7 × 10 = ______
4 × 10 = ______
99 − 10 = ______
9 × 10 = ______
49 + 20 = ______
64 + 20 = ______
17 + 20 = ______
30 − 10 = ______
87 − 10 = ______
35 − 10 = ______
82 + 10 = ______
63 − 10 = ______
72 + 20 = ______
54 + 10 = ______
67 + 20 = ______
83 + 10 = ______
42 + 20 = ______
1 × 10 = ______
50 + 20 = ______
82 − 10 = ______
