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
23 + 20 = ______
34 + 10 = ______
1 × 10 = ______
12 + 10 = ______
73 + 10 = ______
24 + 10 = ______
34 + 20 = ______
94 − 10 = ______
24 − 10 = ______
21 − 10 = ______
82 + 20 = ______
52 + 20 = ______
66 + 10 = ______
81 − 10 = ______
9 × 10 = ______
15 + 20 = ______
2 × 10 = ______
63 + 20 = ______
28 − 10 = ______
33 − 10 = ______
