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
60 − 10 = ______
4 × 10 = ______
9 × 10 = ______
22 + 20 = ______
46 + 20 = ______
82 − 10 = ______
3 × 10 = ______
43 − 10 = ______
28 + 20 = ______
85 + 20 = ______
8 × 10 = ______
99 − 10 = ______
78 − 10 = ______
18 + 10 = ______
69 + 10 = ______
87 − 10 = ______
47 + 20 = ______
28 + 10 = ______
29 + 10 = ______
7 × 10 = ______
