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
87 − 10 = ______
18 + 10 = ______
4 × 10 = ______
1 × 10 = ______
28 + 20 = ______
87 + 10 = ______
67 + 10 = ______
48 + 10 = ______
39 − 10 = ______
12 + 10 = ______
32 + 10 = ______
85 + 10 = ______
86 − 10 = ______
87 + 20 = ______
67 − 10 = ______
29 + 20 = ______
5 × 10 = ______
3 × 10 = ______
27 + 10 = ______
6 × 10 = ______
