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
51 + 10 = ______
67 + 20 = ______
70 + 20 = ______
8 × 10 = ______
1 × 10 = ______
4 × 10 = ______
94 − 10 = ______
17 + 20 = ______
75 − 10 = ______
72 + 10 = ______
24 − 10 = ______
62 + 20 = ______
5 × 10 = ______
37 + 20 = ______
41 − 10 = ______
39 + 10 = ______
52 + 20 = ______
38 + 20 = ______
21 + 20 = ______
32 − 10 = ______
