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
30 + 20 = ______
61 + 10 = ______
81 − 10 = ______
33 − 10 = ______
21 + 10 = ______
62 + 10 = ______
43 − 10 = ______
32 + 10 = ______
4 × 10 = ______
22 + 20 = ______
70 + 20 = ______
5 × 10 = ______
15 + 10 = ______
37 + 10 = ______
54 − 10 = ______
39 + 10 = ______
1 × 10 = ______
7 × 10 = ______
3 × 10 = ______
39 + 20 = ______
