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
4 × 10 = ______
14 + 20 = ______
2 × 10 = ______
6 × 10 = ______
1 × 10 = ______
73 + 20 = ______
72 + 10 = ______
39 − 10 = ______
38 + 20 = ______
3 × 10 = ______
97 − 10 = ______
56 + 20 = ______
87 + 10 = ______
79 + 20 = ______
13 + 10 = ______
43 + 10 = ______
96 − 10 = ______
55 + 10 = ______
17 + 10 = ______
62 − 10 = ______
