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
5 × 10 = ______
86 + 20 = ______
65 − 10 = ______
3 × 10 = ______
45 + 20 = ______
67 + 20 = ______
70 − 10 = ______
46 + 10 = ______
58 + 10 = ______
2 × 10 = ______
71 + 20 = ______
68 + 10 = ______
29 + 10 = ______
99 − 10 = ______
21 − 10 = ______
9 × 10 = ______
85 + 10 = ______
82 − 10 = ______
35 + 20 = ______
73 + 20 = ______
