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
12 + 20 = ______
4 × 10 = ______
82 + 10 = ______
65 − 10 = ______
9 × 10 = ______
42 − 10 = ______
18 + 10 = ______
8 × 10 = ______
1 × 10 = ______
46 − 10 = ______
93 − 10 = ______
45 + 10 = ______
2 × 10 = ______
25 + 20 = ______
78 − 10 = ______
44 + 20 = ______
26 − 10 = ______
34 + 10 = ______
61 − 10 = ______
22 + 10 = ______
