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
9 × 10 = ______
45 − 10 = ______
60 − 10 = ______
3 × 10 = ______
8 × 10 = ______
20 + 10 = ______
24 + 20 = ______
66 − 10 = ______
43 + 10 = ______
86 + 10 = ______
79 − 10 = ______
70 + 20 = ______
1 × 10 = ______
6 × 10 = ______
2 × 10 = ______
60 + 10 = ______
7 × 10 = ______
82 + 20 = ______
54 + 20 = ______
46 + 20 = ______
