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
1 × 10 = ______
61 − 10 = ______
88 − 10 = ______
4 × 10 = ______
68 − 10 = ______
17 + 20 = ______
9 × 10 = ______
49 + 10 = ______
61 + 20 = ______
26 + 10 = ______
43 + 20 = ______
79 + 20 = ______
44 − 10 = ______
45 + 20 = ______
47 − 10 = ______
15 + 20 = ______
28 + 10 = ______
2 × 10 = ______
5 × 10 = ______
83 + 10 = ______
