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
6 × 10 = ______
40 + 10 = ______
12 + 10 = ______
56 + 20 = ______
51 − 10 = ______
82 − 10 = ______
45 − 10 = ______
3 × 10 = ______
22 − 10 = ______
66 + 20 = ______
63 + 20 = ______
35 + 20 = ______
43 + 20 = ______
34 − 10 = ______
91 − 10 = ______
24 − 10 = ______
35 + 10 = ______
12 + 20 = ______
41 − 10 = ______
2 × 10 = ______
