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
89 + 20 = ______
6 × 10 = ______
12 + 10 = ______
4 × 10 = ______
9 × 10 = ______
94 − 10 = ______
62 + 10 = ______
56 + 10 = ______
2 × 10 = ______
3 × 10 = ______
51 − 10 = ______
53 − 10 = ______
24 + 20 = ______
21 + 10 = ______
60 + 20 = ______
57 + 10 = ______
59 − 10 = ______
50 − 10 = ______
45 + 20 = ______
48 − 10 = ______
