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
35 + 20 = ______
52 + 10 = ______
59 + 10 = ______
55 + 20 = ______
3 × 10 = ______
75 − 10 = ______
15 + 20 = ______
2 × 10 = ______
5 × 10 = ______
54 + 20 = ______
7 × 10 = ______
9 × 10 = ______
21 + 20 = ______
32 + 20 = ______
1 × 10 = ______
38 + 20 = ______
43 − 10 = ______
68 − 10 = ______
42 + 20 = ______
4 × 10 = ______
