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
33 + 20 = ______
16 + 10 = ______
83 − 10 = ______
31 + 20 = ______
67 − 10 = ______
6 × 10 = ______
2 × 10 = ______
64 − 10 = ______
46 − 10 = ______
32 + 10 = ______
7 × 10 = ______
15 + 10 = ______
39 + 20 = ______
31 − 10 = ______
43 − 10 = ______
4 × 10 = ______
3 × 10 = ______
8 × 10 = ______
84 − 10 = ______
45 − 10 = ______
