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
78 − 10 = ______
63 − 10 = ______
40 + 20 = ______
9 × 10 = ______
87 + 20 = ______
30 + 10 = ______
88 + 20 = ______
50 − 10 = ______
83 + 20 = ______
15 + 20 = ______
18 + 10 = ______
21 + 10 = ______
38 + 20 = ______
4 × 10 = ______
25 + 10 = ______
66 − 10 = ______
3 × 10 = ______
84 + 20 = ______
2 × 10 = ______
6 × 10 = ______
