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
51 − 10 = ______
87 + 20 = ______
5 × 10 = ______
1 × 10 = ______
85 − 10 = ______
65 + 20 = ______
58 + 20 = ______
61 − 10 = ______
68 + 20 = ______
13 + 20 = ______
74 − 10 = ______
43 + 20 = ______
4 × 10 = ______
35 − 10 = ______
89 + 10 = ______
8 × 10 = ______
88 − 10 = ______
9 × 10 = ______
28 + 20 = ______
16 + 10 = ______
