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
19 + 10 = ______
21 + 20 = ______
37 + 10 = ______
61 + 10 = ______
3 × 10 = ______
9 × 10 = ______
68 + 20 = ______
11 + 10 = ______
27 − 10 = ______
1 × 10 = ______
85 + 10 = ______
71 + 10 = ______
30 − 10 = ______
2 × 10 = ______
8 × 10 = ______
26 + 20 = ______
6 × 10 = ______
84 − 10 = ______
5 × 10 = ______
4 × 10 = ______
