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
8 × 10 = ______
29 − 10 = ______
76 + 20 = ______
6 × 10 = ______
82 − 10 = ______
28 − 10 = ______
69 + 20 = ______
15 + 10 = ______
4 × 10 = ______
12 + 10 = ______
69 + 10 = ______
30 + 20 = ______
75 − 10 = ______
62 − 10 = ______
17 + 20 = ______
24 − 10 = ______
82 + 20 = ______
27 + 20 = ______
44 − 10 = ______
85 − 10 = ______
