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
40 + 10 = ______
55 + 10 = ______
8 × 10 = ______
34 + 20 = ______
39 + 20 = ______
3 × 10 = ______
15 + 20 = ______
50 − 10 = ______
66 − 10 = ______
5 × 10 = ______
89 + 10 = ______
9 × 10 = ______
34 − 10 = ______
57 + 10 = ______
6 × 10 = ______
84 − 10 = ______
1 × 10 = ______
34 + 10 = ______
28 − 10 = ______
32 + 10 = ______
