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
71 + 10 = ______
67 + 20 = ______
52 − 10 = ______
7 × 10 = ______
40 + 10 = ______
28 + 10 = ______
67 − 10 = ______
21 − 10 = ______
1 × 10 = ______
3 × 10 = ______
44 + 10 = ______
80 + 10 = ______
21 + 20 = ______
83 + 10 = ______
42 − 10 = ______
15 + 20 = ______
85 − 10 = ______
53 + 10 = ______
9 × 10 = ______
35 − 10 = ______
